Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/instanceKlass.cpp @ 24157:f4e6ddeb5b6f jvmci-0.31
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 19 Jul 2017 19:44:11 +0200 |
parents | f13e777eb255 |
children |
rev | line source |
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0 | 1 /* |
23893 | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
23893 | 28 #include "classfile/systemDictionaryShared.hpp" |
1972 | 29 #include "classfile/verifier.hpp" |
30 #include "classfile/vmSymbols.hpp" | |
31 #include "compiler/compileBroker.hpp" | |
32 #include "gc_implementation/shared/markSweep.inline.hpp" | |
33 #include "gc_interface/collectedHeap.inline.hpp" | |
34 #include "interpreter/oopMapCache.hpp" | |
35 #include "interpreter/rewriter.hpp" | |
36 #include "jvmtifiles/jvmti.h" | |
37 #include "memory/genOopClosures.inline.hpp" | |
7956 | 38 #include "memory/heapInspection.hpp" |
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39 #include "memory/iterator.inline.hpp" |
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40 #include "memory/metadataFactory.hpp" |
1972 | 41 #include "memory/oopFactory.hpp" |
3938 | 42 #include "oops/fieldStreams.hpp" |
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43 #include "oops/instanceClassLoaderKlass.hpp" |
1972 | 44 #include "oops/instanceKlass.hpp" |
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45 #include "oops/instanceMirrorKlass.hpp" |
1972 | 46 #include "oops/instanceOop.hpp" |
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47 #include "oops/klass.inline.hpp" |
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48 #include "oops/method.hpp" |
1972 | 49 #include "oops/oop.inline.hpp" |
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50 #include "oops/symbol.hpp" |
1972 | 51 #include "prims/jvmtiExport.hpp" |
52 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
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53 #include "prims/jvmtiRedefineClasses.hpp" |
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54 #include "prims/jvmtiThreadState.hpp" |
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55 #include "prims/methodComparator.hpp" |
1972 | 56 #include "runtime/fieldDescriptor.hpp" |
57 #include "runtime/handles.inline.hpp" | |
58 #include "runtime/javaCalls.hpp" | |
59 #include "runtime/mutexLocker.hpp" | |
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60 #include "runtime/orderAccess.inline.hpp" |
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61 #include "runtime/thread.inline.hpp" |
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62 #include "services/classLoadingService.hpp" |
1972 | 63 #include "services/threadService.hpp" |
64 #include "utilities/dtrace.hpp" | |
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65 #include "utilities/macros.hpp" |
22298 | 66 #if INCLUDE_JVMCI |
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67 #include "classfile/javaAssertions.hpp" |
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68 #include "jvmci/jvmciRuntime.hpp" |
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69 #endif |
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70 #if INCLUDE_ALL_GCS |
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71 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp" |
1972 | 72 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
73 #include "gc_implementation/g1/g1OopClosures.inline.hpp" | |
74 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
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75 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
1972 | 76 #include "gc_implementation/parNew/parOopClosures.inline.hpp" |
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77 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" |
1972 | 78 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" |
79 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
80 #include "oops/oop.pcgc.inline.hpp" | |
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81 #endif // INCLUDE_ALL_GCS |
1972 | 82 #ifdef COMPILER1 |
83 #include "c1/c1_Compiler.hpp" | |
84 #endif | |
0 | 85 |
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86 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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87 |
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88 #ifdef DTRACE_ENABLED |
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89 |
4006 | 90 #ifndef USDT2 |
91 | |
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92 HS_DTRACE_PROBE_DECL4(hotspot, class__initialization__required, |
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93 char*, intptr_t, oop, intptr_t); |
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94 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__recursive, |
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95 char*, intptr_t, oop, intptr_t, int); |
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96 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__concurrent, |
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97 char*, intptr_t, oop, intptr_t, int); |
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98 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__erroneous, |
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99 char*, intptr_t, oop, intptr_t, int); |
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100 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__super__failed, |
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101 char*, intptr_t, oop, intptr_t, int); |
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102 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__clinit, |
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103 char*, intptr_t, oop, intptr_t, int); |
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104 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__error, |
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105 char*, intptr_t, oop, intptr_t, int); |
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106 HS_DTRACE_PROBE_DECL5(hotspot, class__initialization__end, |
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107 char*, intptr_t, oop, intptr_t, int); |
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108 |
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109 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ |
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110 { \ |
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111 char* data = NULL; \ |
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112 int len = 0; \ |
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113 Symbol* name = (clss)->name(); \ |
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114 if (name != NULL) { \ |
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115 data = (char*)name->bytes(); \ |
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116 len = name->utf8_length(); \ |
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117 } \ |
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118 HS_DTRACE_PROBE4(hotspot, class__initialization__##type, \ |
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119 data, len, (void *)(clss)->class_loader(), thread_type); \ |
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120 } |
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121 |
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122 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ |
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123 { \ |
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124 char* data = NULL; \ |
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125 int len = 0; \ |
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126 Symbol* name = (clss)->name(); \ |
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127 if (name != NULL) { \ |
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128 data = (char*)name->bytes(); \ |
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129 len = name->utf8_length(); \ |
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130 } \ |
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131 HS_DTRACE_PROBE5(hotspot, class__initialization__##type, \ |
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132 data, len, (void *)(clss)->class_loader(), thread_type, wait); \ |
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133 } |
4006 | 134 #else /* USDT2 */ |
135 | |
136 #define HOTSPOT_CLASS_INITIALIZATION_required HOTSPOT_CLASS_INITIALIZATION_REQUIRED | |
137 #define HOTSPOT_CLASS_INITIALIZATION_recursive HOTSPOT_CLASS_INITIALIZATION_RECURSIVE | |
138 #define HOTSPOT_CLASS_INITIALIZATION_concurrent HOTSPOT_CLASS_INITIALIZATION_CONCURRENT | |
139 #define HOTSPOT_CLASS_INITIALIZATION_erroneous HOTSPOT_CLASS_INITIALIZATION_ERRONEOUS | |
140 #define HOTSPOT_CLASS_INITIALIZATION_super__failed HOTSPOT_CLASS_INITIALIZATION_SUPER_FAILED | |
141 #define HOTSPOT_CLASS_INITIALIZATION_clinit HOTSPOT_CLASS_INITIALIZATION_CLINIT | |
142 #define HOTSPOT_CLASS_INITIALIZATION_error HOTSPOT_CLASS_INITIALIZATION_ERROR | |
143 #define HOTSPOT_CLASS_INITIALIZATION_end HOTSPOT_CLASS_INITIALIZATION_END | |
144 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) \ | |
145 { \ | |
146 char* data = NULL; \ | |
147 int len = 0; \ | |
148 Symbol* name = (clss)->name(); \ | |
149 if (name != NULL) { \ | |
150 data = (char*)name->bytes(); \ | |
151 len = name->utf8_length(); \ | |
152 } \ | |
153 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
154 data, len, (clss)->class_loader(), thread_type); \ | |
155 } | |
156 | |
157 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) \ | |
158 { \ | |
159 char* data = NULL; \ | |
160 int len = 0; \ | |
161 Symbol* name = (clss)->name(); \ | |
162 if (name != NULL) { \ | |
163 data = (char*)name->bytes(); \ | |
164 len = name->utf8_length(); \ | |
165 } \ | |
166 HOTSPOT_CLASS_INITIALIZATION_##type( \ | |
167 data, len, (clss)->class_loader(), thread_type, wait); \ | |
168 } | |
169 #endif /* USDT2 */ | |
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170 |
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171 #else // ndef DTRACE_ENABLED |
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172 |
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173 #define DTRACE_CLASSINIT_PROBE(type, clss, thread_type) |
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174 #define DTRACE_CLASSINIT_PROBE_WAIT(type, clss, thread_type, wait) |
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175 |
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176 #endif // ndef DTRACE_ENABLED |
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177 |
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178 volatile int InstanceKlass::_total_instanceKlass_count = 0; |
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179 |
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180 InstanceKlass* InstanceKlass::allocate_instance_klass( |
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181 ClassLoaderData* loader_data, |
8031 | 182 int vtable_len, |
183 int itable_len, | |
184 int static_field_size, | |
185 int nonstatic_oop_map_size, | |
186 ReferenceType rt, | |
187 AccessFlags access_flags, | |
188 Symbol* name, | |
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189 Klass* super_klass, |
8031 | 190 bool is_anonymous, |
191 TRAPS) { | |
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192 |
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193 int size = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
8031 | 194 access_flags.is_interface(), is_anonymous); |
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195 |
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196 // Allocation |
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197 InstanceKlass* ik; |
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198 if (rt == REF_NONE) { |
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199 if (name == vmSymbols::java_lang_Class()) { |
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200 ik = new (loader_data, size, THREAD) InstanceMirrorKlass( |
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201 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 202 access_flags, is_anonymous); |
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203 } else if (name == vmSymbols::java_lang_ClassLoader() || |
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204 (SystemDictionary::ClassLoader_klass_loaded() && |
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205 super_klass != NULL && |
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206 super_klass->is_subtype_of(SystemDictionary::ClassLoader_klass()))) { |
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207 ik = new (loader_data, size, THREAD) InstanceClassLoaderKlass( |
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208 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
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210 } else { |
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211 // normal class |
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212 ik = new (loader_data, size, THREAD) InstanceKlass( |
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213 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
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215 } |
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216 } else { |
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217 // reference klass |
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218 ik = new (loader_data, size, THREAD) InstanceRefKlass( |
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219 vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, |
8031 | 220 access_flags, is_anonymous); |
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221 } |
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222 |
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223 // Check for pending exception before adding to the loader data and incrementing |
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224 // class count. Can get OOM here. |
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225 if (HAS_PENDING_EXCEPTION) { |
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226 return NULL; |
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227 } |
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228 |
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229 // Add all classes to our internal class loader list here, |
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230 // including classes in the bootstrap (NULL) class loader. |
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231 loader_data->add_class(ik); |
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232 |
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233 Atomic::inc(&_total_instanceKlass_count); |
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234 return ik; |
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235 } |
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236 |
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237 |
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238 // copy method ordering from resource area to Metaspace |
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239 void InstanceKlass::copy_method_ordering(intArray* m, TRAPS) { |
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240 if (m != NULL) { |
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241 // allocate a new array and copy contents (memcpy?) |
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242 _method_ordering = MetadataFactory::new_array<int>(class_loader_data(), m->length(), CHECK); |
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243 for (int i = 0; i < m->length(); i++) { |
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244 _method_ordering->at_put(i, m->at(i)); |
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245 } |
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246 } else { |
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247 _method_ordering = Universe::the_empty_int_array(); |
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248 } |
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249 } |
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250 |
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251 // create a new array of vtable_indices for default methods |
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252 Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { |
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253 Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); |
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254 assert(default_vtable_indices() == NULL, "only create once"); |
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255 set_default_vtable_indices(vtable_indices); |
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256 return vtable_indices; |
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257 } |
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258 |
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259 InstanceKlass::InstanceKlass(int vtable_len, |
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260 int itable_len, |
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261 int static_field_size, |
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262 int nonstatic_oop_map_size, |
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263 ReferenceType rt, |
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264 AccessFlags access_flags, |
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265 bool is_anonymous) { |
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266 No_Safepoint_Verifier no_safepoint; // until k becomes parsable |
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267 |
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268 int iksize = InstanceKlass::size(vtable_len, itable_len, nonstatic_oop_map_size, |
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269 access_flags.is_interface(), is_anonymous); |
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270 |
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271 set_vtable_length(vtable_len); |
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272 set_itable_length(itable_len); |
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273 set_static_field_size(static_field_size); |
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274 set_nonstatic_oop_map_size(nonstatic_oop_map_size); |
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275 set_access_flags(access_flags); |
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276 _misc_flags = 0; // initialize to zero |
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277 set_is_anonymous(is_anonymous); |
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278 assert(size() == iksize, "wrong size for object"); |
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279 |
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280 set_array_klasses(NULL); |
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281 set_methods(NULL); |
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282 set_method_ordering(NULL); |
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283 set_default_methods(NULL); |
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284 set_default_vtable_indices(NULL); |
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285 set_local_interfaces(NULL); |
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286 set_transitive_interfaces(NULL); |
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287 init_implementor(); |
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288 set_fields(NULL, 0); |
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289 set_constants(NULL); |
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290 set_class_loader_data(NULL); |
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291 set_source_file_name_index(0); |
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292 set_source_debug_extension(NULL, 0); |
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293 set_array_name(NULL); |
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294 set_inner_classes(NULL); |
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295 set_static_oop_field_count(0); |
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296 set_nonstatic_field_size(0); |
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297 set_is_marked_dependent(false); |
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298 set_has_unloaded_dependent(false); |
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299 set_init_state(InstanceKlass::allocated); |
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300 set_init_thread(NULL); |
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301 set_reference_type(rt); |
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302 set_oop_map_cache(NULL); |
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303 set_jni_ids(NULL); |
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304 set_osr_nmethods_head(NULL); |
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305 set_breakpoints(NULL); |
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306 init_previous_versions(); |
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307 set_generic_signature_index(0); |
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308 release_set_methods_jmethod_ids(NULL); |
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309 set_annotations(NULL); |
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310 set_jvmti_cached_class_field_map(NULL); |
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311 set_initial_method_idnum(0); |
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312 _dependencies = NULL; |
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313 set_jvmti_cached_class_field_map(NULL); |
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314 set_cached_class_file(NULL); |
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315 set_initial_method_idnum(0); |
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316 set_minor_version(0); |
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317 set_major_version(0); |
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318 NOT_PRODUCT(_verify_count = 0;) |
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319 |
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320 // initialize the non-header words to zero |
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321 intptr_t* p = (intptr_t*)this; |
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322 for (int index = InstanceKlass::header_size(); index < iksize; index++) { |
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323 p[index] = NULL_WORD; |
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324 } |
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325 |
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326 // Set temporary value until parseClassFile updates it with the real instance |
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327 // size. |
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328 set_layout_helper(Klass::instance_layout_helper(0, true)); |
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329 } |
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330 |
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331 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data, |
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332 Array<Method*>* methods) { |
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333 if (methods != NULL && methods != Universe::the_empty_method_array() && |
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334 !methods->is_shared()) { |
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335 for (int i = 0; i < methods->length(); i++) { |
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336 Method* method = methods->at(i); |
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337 if (method == NULL) continue; // maybe null if error processing |
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338 // Only want to delete methods that are not executing for RedefineClasses. |
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339 // The previous version will point to them so they're not totally dangling |
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340 assert (!method->on_stack(), "shouldn't be called with methods on stack"); |
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341 MetadataFactory::free_metadata(loader_data, method); |
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342 } |
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343 MetadataFactory::free_array<Method*>(loader_data, methods); |
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344 } |
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345 } |
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346 |
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347 void InstanceKlass::deallocate_interfaces(ClassLoaderData* loader_data, |
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348 Klass* super_klass, |
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349 Array<Klass*>* local_interfaces, |
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350 Array<Klass*>* transitive_interfaces) { |
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351 // Only deallocate transitive interfaces if not empty, same as super class |
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352 // or same as local interfaces. See code in parseClassFile. |
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353 Array<Klass*>* ti = transitive_interfaces; |
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354 if (ti != Universe::the_empty_klass_array() && ti != local_interfaces) { |
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355 // check that the interfaces don't come from super class |
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356 Array<Klass*>* sti = (super_klass == NULL) ? NULL : |
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357 InstanceKlass::cast(super_klass)->transitive_interfaces(); |
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358 if (ti != sti && ti != NULL && !ti->is_shared()) { |
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359 MetadataFactory::free_array<Klass*>(loader_data, ti); |
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360 } |
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361 } |
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362 |
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363 // local interfaces can be empty |
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364 if (local_interfaces != Universe::the_empty_klass_array() && |
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365 local_interfaces != NULL && !local_interfaces->is_shared()) { |
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366 MetadataFactory::free_array<Klass*>(loader_data, local_interfaces); |
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367 } |
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368 } |
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369 |
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370 // This function deallocates the metadata and C heap pointers that the |
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371 // InstanceKlass points to. |
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372 void InstanceKlass::deallocate_contents(ClassLoaderData* loader_data) { |
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373 |
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374 // Orphan the mirror first, CMS thinks it's still live. |
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375 if (java_mirror() != NULL) { |
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376 java_lang_Class::set_klass(java_mirror(), NULL); |
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377 } |
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378 |
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379 // Need to take this class off the class loader data list. |
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380 loader_data->remove_class(this); |
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381 |
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382 // The array_klass for this class is created later, after error handling. |
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383 // For class redefinition, we keep the original class so this scratch class |
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384 // doesn't have an array class. Either way, assert that there is nothing |
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385 // to deallocate. |
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386 assert(array_klasses() == NULL, "array classes shouldn't be created for this class yet"); |
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387 |
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388 // Release C heap allocated data that this might point to, which includes |
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389 // reference counting symbol names. |
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390 release_C_heap_structures(); |
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391 |
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392 deallocate_methods(loader_data, methods()); |
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393 set_methods(NULL); |
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394 |
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395 if (method_ordering() != NULL && |
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396 method_ordering() != Universe::the_empty_int_array() && |
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397 !method_ordering()->is_shared()) { |
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398 MetadataFactory::free_array<int>(loader_data, method_ordering()); |
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399 } |
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400 set_method_ordering(NULL); |
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401 |
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402 // default methods can be empty |
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403 if (default_methods() != NULL && |
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404 default_methods() != Universe::the_empty_method_array() && |
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405 !default_methods()->is_shared()) { |
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406 MetadataFactory::free_array<Method*>(loader_data, default_methods()); |
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407 } |
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408 // Do NOT deallocate the default methods, they are owned by superinterfaces. |
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409 set_default_methods(NULL); |
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410 |
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411 // default methods vtable indices can be empty |
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412 if (default_vtable_indices() != NULL && |
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413 !default_vtable_indices()->is_shared()) { |
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414 MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); |
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415 } |
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416 set_default_vtable_indices(NULL); |
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417 |
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418 |
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419 // This array is in Klass, but remove it with the InstanceKlass since |
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420 // this place would be the only caller and it can share memory with transitive |
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421 // interfaces. |
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422 if (secondary_supers() != NULL && |
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423 secondary_supers() != Universe::the_empty_klass_array() && |
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424 secondary_supers() != transitive_interfaces() && |
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425 !secondary_supers()->is_shared()) { |
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426 MetadataFactory::free_array<Klass*>(loader_data, secondary_supers()); |
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427 } |
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428 set_secondary_supers(NULL); |
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429 |
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430 deallocate_interfaces(loader_data, super(), local_interfaces(), transitive_interfaces()); |
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431 set_transitive_interfaces(NULL); |
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432 set_local_interfaces(NULL); |
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433 |
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434 if (fields() != NULL && !fields()->is_shared()) { |
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435 MetadataFactory::free_array<jushort>(loader_data, fields()); |
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436 } |
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437 set_fields(NULL, 0); |
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438 |
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439 // If a method from a redefined class is using this constant pool, don't |
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440 // delete it, yet. The new class's previous version will point to this. |
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441 if (constants() != NULL) { |
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442 assert (!constants()->on_stack(), "shouldn't be called if anything is onstack"); |
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443 if (!constants()->is_shared()) { |
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444 MetadataFactory::free_metadata(loader_data, constants()); |
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445 } |
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446 // Delete any cached resolution errors for the constant pool |
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447 SystemDictionary::delete_resolution_error(constants()); |
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448 |
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449 set_constants(NULL); |
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450 } |
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451 |
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452 if (inner_classes() != NULL && |
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453 inner_classes() != Universe::the_empty_short_array() && |
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454 !inner_classes()->is_shared()) { |
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455 MetadataFactory::free_array<jushort>(loader_data, inner_classes()); |
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456 } |
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457 set_inner_classes(NULL); |
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458 |
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459 // We should deallocate the Annotations instance if it's not in shared spaces. |
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460 if (annotations() != NULL && !annotations()->is_shared()) { |
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461 MetadataFactory::free_metadata(loader_data, annotations()); |
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462 } |
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463 set_annotations(NULL); |
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464 } |
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465 |
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466 bool InstanceKlass::should_be_initialized() const { |
0 | 467 return !is_initialized(); |
468 } | |
469 | |
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470 klassVtable* InstanceKlass::vtable() const { |
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471 return new klassVtable(this, start_of_vtable(), vtable_length() / vtableEntry::size()); |
0 | 472 } |
473 | |
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474 klassItable* InstanceKlass::itable() const { |
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475 return new klassItable(instanceKlassHandle(this)); |
0 | 476 } |
477 | |
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478 void InstanceKlass::eager_initialize(Thread *thread) { |
0 | 479 if (!EagerInitialization) return; |
480 | |
481 if (this->is_not_initialized()) { | |
482 // abort if the the class has a class initializer | |
483 if (this->class_initializer() != NULL) return; | |
484 | |
485 // abort if it is java.lang.Object (initialization is handled in genesis) | |
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486 Klass* super = this->super(); |
0 | 487 if (super == NULL) return; |
488 | |
489 // abort if the super class should be initialized | |
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490 if (!InstanceKlass::cast(super)->is_initialized()) return; |
0 | 491 |
492 // call body to expose the this pointer | |
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493 instanceKlassHandle this_oop(thread, this); |
0 | 494 eager_initialize_impl(this_oop); |
495 } | |
496 } | |
497 | |
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498 // JVMTI spec thinks there are signers and protection domain in the |
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499 // instanceKlass. These accessors pretend these fields are there. |
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500 // The hprof specification also thinks these fields are in InstanceKlass. |
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501 oop InstanceKlass::protection_domain() const { |
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502 // return the protection_domain from the mirror |
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503 return java_lang_Class::protection_domain(java_mirror()); |
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504 } |
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505 |
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506 // To remove these from requires an incompatible change and CCC request. |
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507 objArrayOop InstanceKlass::signers() const { |
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508 // return the signers from the mirror |
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509 return java_lang_Class::signers(java_mirror()); |
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510 } |
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511 |
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512 oop InstanceKlass::init_lock() const { |
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513 // return the init lock from the mirror |
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514 oop lock = java_lang_Class::init_lock(java_mirror()); |
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515 // Prevent reordering with any access of initialization state |
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516 OrderAccess::loadload(); |
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517 assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state |
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518 "only fully initialized state can have a null lock"); |
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519 return lock; |
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520 } |
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521 |
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522 // Set the initialization lock to null so the object can be GC'ed. Any racing |
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523 // threads to get this lock will see a null lock and will not lock. |
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524 // That's okay because they all check for initialized state after getting |
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525 // the lock and return. |
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526 void InstanceKlass::fence_and_clear_init_lock() { |
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527 // make sure previous stores are all done, notably the init_state. |
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528 OrderAccess::storestore(); |
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529 java_lang_Class::set_init_lock(java_mirror(), NULL); |
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530 assert(!is_not_initialized(), "class must be initialized now"); |
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531 } |
0 | 532 |
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533 void InstanceKlass::eager_initialize_impl(instanceKlassHandle this_oop) { |
0 | 534 EXCEPTION_MARK; |
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535 oop init_lock = this_oop->init_lock(); |
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536 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 537 |
538 // abort if someone beat us to the initialization | |
539 if (!this_oop->is_not_initialized()) return; // note: not equivalent to is_initialized() | |
540 | |
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541 ClassState old_state = this_oop->init_state(); |
0 | 542 link_class_impl(this_oop, true, THREAD); |
543 if (HAS_PENDING_EXCEPTION) { | |
544 CLEAR_PENDING_EXCEPTION; | |
545 // Abort if linking the class throws an exception. | |
546 | |
547 // Use a test to avoid redundantly resetting the state if there's | |
548 // no change. Set_init_state() asserts that state changes make | |
549 // progress, whereas here we might just be spinning in place. | |
550 if( old_state != this_oop->_init_state ) | |
551 this_oop->set_init_state (old_state); | |
552 } else { | |
553 // linking successfull, mark class as initialized | |
554 this_oop->set_init_state (fully_initialized); | |
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555 this_oop->fence_and_clear_init_lock(); |
0 | 556 // trace |
557 if (TraceClassInitialization) { | |
558 ResourceMark rm(THREAD); | |
559 tty->print_cr("[Initialized %s without side effects]", this_oop->external_name()); | |
560 } | |
561 } | |
562 } | |
563 | |
564 | |
565 // See "The Virtual Machine Specification" section 2.16.5 for a detailed explanation of the class initialization | |
566 // process. The step comments refers to the procedure described in that section. | |
567 // Note: implementation moved to static method to expose the this pointer. | |
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568 void InstanceKlass::initialize(TRAPS) { |
0 | 569 if (this->should_be_initialized()) { |
570 HandleMark hm(THREAD); | |
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571 instanceKlassHandle this_oop(THREAD, this); |
0 | 572 initialize_impl(this_oop, CHECK); |
573 // Note: at this point the class may be initialized | |
574 // OR it may be in the state of being initialized | |
575 // in case of recursive initialization! | |
576 } else { | |
577 assert(is_initialized(), "sanity check"); | |
578 } | |
579 } | |
580 | |
581 | |
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582 bool InstanceKlass::verify_code( |
0 | 583 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
584 // 1) Verify the bytecodes | |
585 Verifier::Mode mode = | |
586 throw_verifyerror ? Verifier::ThrowException : Verifier::NoException; | |
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587 return Verifier::verify(this_oop, mode, this_oop->should_verify_class(), CHECK_false); |
0 | 588 } |
589 | |
590 | |
591 // Used exclusively by the shared spaces dump mechanism to prevent | |
592 // classes mapped into the shared regions in new VMs from appearing linked. | |
593 | |
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594 void InstanceKlass::unlink_class() { |
0 | 595 assert(is_linked(), "must be linked"); |
596 _init_state = loaded; | |
597 } | |
598 | |
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599 void InstanceKlass::link_class(TRAPS) { |
0 | 600 assert(is_loaded(), "must be loaded"); |
601 if (!is_linked()) { | |
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602 HandleMark hm(THREAD); |
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603 instanceKlassHandle this_oop(THREAD, this); |
0 | 604 link_class_impl(this_oop, true, CHECK); |
605 } | |
606 } | |
607 | |
608 // Called to verify that a class can link during initialization, without | |
609 // throwing a VerifyError. | |
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610 bool InstanceKlass::link_class_or_fail(TRAPS) { |
0 | 611 assert(is_loaded(), "must be loaded"); |
612 if (!is_linked()) { | |
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613 HandleMark hm(THREAD); |
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614 instanceKlassHandle this_oop(THREAD, this); |
0 | 615 link_class_impl(this_oop, false, CHECK_false); |
616 } | |
617 return is_linked(); | |
618 } | |
619 | |
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620 bool InstanceKlass::link_class_impl( |
0 | 621 instanceKlassHandle this_oop, bool throw_verifyerror, TRAPS) { |
622 // check for error state | |
623 if (this_oop->is_in_error_state()) { | |
624 ResourceMark rm(THREAD); | |
625 THROW_MSG_(vmSymbols::java_lang_NoClassDefFoundError(), | |
626 this_oop->external_name(), false); | |
627 } | |
628 // return if already verified | |
629 if (this_oop->is_linked()) { | |
630 return true; | |
631 } | |
632 | |
633 // Timing | |
634 // timer handles recursion | |
635 assert(THREAD->is_Java_thread(), "non-JavaThread in link_class_impl"); | |
636 JavaThread* jt = (JavaThread*)THREAD; | |
637 | |
638 // link super class before linking this class | |
639 instanceKlassHandle super(THREAD, this_oop->super()); | |
640 if (super.not_null()) { | |
641 if (super->is_interface()) { // check if super class is an interface | |
642 ResourceMark rm(THREAD); | |
643 Exceptions::fthrow( | |
644 THREAD_AND_LOCATION, | |
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645 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 646 "class %s has interface %s as super class", |
647 this_oop->external_name(), | |
648 super->external_name() | |
649 ); | |
650 return false; | |
651 } | |
652 | |
653 link_class_impl(super, throw_verifyerror, CHECK_false); | |
654 } | |
655 | |
656 // link all interfaces implemented by this class before linking this class | |
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657 Array<Klass*>* interfaces = this_oop->local_interfaces(); |
0 | 658 int num_interfaces = interfaces->length(); |
659 for (int index = 0; index < num_interfaces; index++) { | |
660 HandleMark hm(THREAD); | |
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661 instanceKlassHandle ih(THREAD, interfaces->at(index)); |
0 | 662 link_class_impl(ih, throw_verifyerror, CHECK_false); |
663 } | |
664 | |
665 // in case the class is linked in the process of linking its superclasses | |
666 if (this_oop->is_linked()) { | |
667 return true; | |
668 } | |
669 | |
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670 // trace only the link time for this klass that includes |
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671 // the verification time |
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672 PerfClassTraceTime vmtimer(ClassLoader::perf_class_link_time(), |
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673 ClassLoader::perf_class_link_selftime(), |
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674 ClassLoader::perf_classes_linked(), |
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675 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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676 jt->get_thread_stat()->perf_timers_addr(), |
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677 PerfClassTraceTime::CLASS_LINK); |
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678 |
0 | 679 // verification & rewriting |
680 { | |
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681 oop init_lock = this_oop->init_lock(); |
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682 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 683 // rewritten will have been set if loader constraint error found |
684 // on an earlier link attempt | |
685 // don't verify or rewrite if already rewritten | |
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686 |
0 | 687 if (!this_oop->is_linked()) { |
688 if (!this_oop->is_rewritten()) { | |
689 { | |
690 // Timer includes any side effects of class verification (resolution, | |
691 // etc), but not recursive entry into verify_code(). | |
875
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692 PerfClassTraceTime timer(ClassLoader::perf_class_verify_time(), |
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693 ClassLoader::perf_class_verify_selftime(), |
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694 ClassLoader::perf_classes_verified(), |
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695 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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696 jt->get_thread_stat()->perf_timers_addr(), |
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697 PerfClassTraceTime::CLASS_VERIFY); |
0 | 698 bool verify_ok = verify_code(this_oop, throw_verifyerror, THREAD); |
699 if (!verify_ok) { | |
700 return false; | |
701 } | |
702 } | |
703 | |
704 // Just in case a side-effect of verify linked this class already | |
705 // (which can sometimes happen since the verifier loads classes | |
706 // using custom class loaders, which are free to initialize things) | |
707 if (this_oop->is_linked()) { | |
708 return true; | |
709 } | |
710 | |
711 // also sets rewritten | |
712 this_oop->rewrite_class(CHECK_false); | |
23893 | 713 } else if (this_oop()->is_shared()) { |
714 ResourceMark rm(THREAD); | |
715 char* message_buffer; // res-allocated by check_verification_dependencies | |
716 Handle loader = this_oop()->class_loader(); | |
717 Handle pd = this_oop()->protection_domain(); | |
718 bool verified = SystemDictionaryShared::check_verification_dependencies(this_oop(), | |
719 loader, pd, &message_buffer, THREAD); | |
720 if (!verified) { | |
721 THROW_MSG_(vmSymbols::java_lang_VerifyError(), message_buffer, false); | |
722 } | |
0 | 723 } |
724 | |
3404 | 725 // relocate jsrs and link methods after they are all rewritten |
7459
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726 this_oop->link_methods(CHECK_false); |
3404 | 727 |
0 | 728 // Initialize the vtable and interface table after |
729 // methods have been rewritten since rewrite may | |
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730 // fabricate new Method*s. |
0 | 731 // also does loader constraint checking |
23905 | 732 // |
733 // Initialize_vtable and initialize_itable need to be rerun for | |
734 // a shared class if the class is not loaded by the NULL classloader. | |
735 ClassLoaderData * loader_data = this_oop->class_loader_data(); | |
736 if (!(this_oop()->is_shared() && | |
737 loader_data->is_the_null_class_loader_data())) { | |
0 | 738 ResourceMark rm(THREAD); |
739 this_oop->vtable()->initialize_vtable(true, CHECK_false); | |
740 this_oop->itable()->initialize_itable(true, CHECK_false); | |
741 } | |
742 #ifdef ASSERT | |
743 else { | |
744 ResourceMark rm(THREAD); | |
745 this_oop->vtable()->verify(tty, true); | |
746 // In case itable verification is ever added. | |
747 // this_oop->itable()->verify(tty, true); | |
748 } | |
749 #endif | |
750 this_oop->set_init_state(linked); | |
751 if (JvmtiExport::should_post_class_prepare()) { | |
752 Thread *thread = THREAD; | |
753 assert(thread->is_Java_thread(), "thread->is_Java_thread()"); | |
754 JvmtiExport::post_class_prepare((JavaThread *) thread, this_oop()); | |
755 } | |
756 } | |
757 } | |
758 return true; | |
759 } | |
760 | |
761 | |
762 // Rewrite the byte codes of all of the methods of a class. | |
763 // The rewriter must be called exactly once. Rewriting must happen after | |
764 // verification but before the first method of the class is executed. | |
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765 void InstanceKlass::rewrite_class(TRAPS) { |
0 | 766 assert(is_loaded(), "must be loaded"); |
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767 instanceKlassHandle this_oop(THREAD, this); |
0 | 768 if (this_oop->is_rewritten()) { |
769 assert(this_oop()->is_shared(), "rewriting an unshared class?"); | |
770 return; | |
771 } | |
3404 | 772 Rewriter::rewrite(this_oop, CHECK); |
0 | 773 this_oop->set_rewritten(); |
774 } | |
775 | |
3404 | 776 // Now relocate and link method entry points after class is rewritten. |
777 // This is outside is_rewritten flag. In case of an exception, it can be | |
778 // executed more than once. | |
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779 void InstanceKlass::link_methods(TRAPS) { |
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780 int len = methods()->length(); |
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781 for (int i = len-1; i >= 0; i--) { |
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782 methodHandle m(THREAD, methods()->at(i)); |
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783 |
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784 // Set up method entry points for compiler and interpreter . |
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785 m->link_method(m, CHECK); |
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786 |
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787 // This is for JVMTI and unrelated to relocator but the last thing we do |
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788 #ifdef ASSERT |
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789 if (StressMethodComparator) { |
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790 ResourceMark rm(THREAD); |
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791 static int nmc = 0; |
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792 for (int j = i; j >= 0 && j >= i-4; j--) { |
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793 if ((++nmc % 1000) == 0) tty->print_cr("Have run MethodComparator %d times...", nmc); |
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794 bool z = MethodComparator::methods_EMCP(m(), |
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795 methods()->at(j)); |
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796 if (j == i && !z) { |
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797 tty->print("MethodComparator FAIL: "); m->print(); m->print_codes(); |
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798 assert(z, "method must compare equal to itself"); |
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799 } |
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800 } |
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801 } |
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802 #endif //ASSERT |
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803 } |
3404 | 804 } |
805 | |
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806 // Eagerly initialize superinterfaces that declare default methods (concrete instance: any access) |
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807 void InstanceKlass::initialize_super_interfaces(instanceKlassHandle this_oop, TRAPS) { |
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808 if (this_oop->has_default_methods()) { |
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809 for (int i = 0; i < this_oop->local_interfaces()->length(); ++i) { |
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810 Klass* iface = this_oop->local_interfaces()->at(i); |
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811 InstanceKlass* ik = InstanceKlass::cast(iface); |
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812 if (ik->should_be_initialized()) { |
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813 if (ik->has_default_methods()) { |
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814 ik->initialize_super_interfaces(ik, THREAD); |
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815 } |
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816 // Only initialize() interfaces that "declare" concrete methods. |
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817 // has_default_methods drives searching superinterfaces since it |
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818 // means has_default_methods in its superinterface hierarchy |
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819 if (!HAS_PENDING_EXCEPTION && ik->declares_default_methods()) { |
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820 ik->initialize(THREAD); |
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821 } |
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822 if (HAS_PENDING_EXCEPTION) { |
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823 Handle e(THREAD, PENDING_EXCEPTION); |
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824 CLEAR_PENDING_EXCEPTION; |
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825 { |
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826 EXCEPTION_MARK; |
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827 // Locks object, set state, and notify all waiting threads |
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828 this_oop->set_initialization_state_and_notify( |
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829 initialization_error, THREAD); |
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830 |
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831 // ignore any exception thrown, superclass initialization error is |
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832 // thrown below |
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833 CLEAR_PENDING_EXCEPTION; |
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834 } |
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835 THROW_OOP(e()); |
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836 } |
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837 } |
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838 } |
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839 } |
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840 } |
0 | 841 |
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842 void InstanceKlass::initialize_impl(instanceKlassHandle this_oop, TRAPS) { |
0 | 843 // Make sure klass is linked (verified) before initialization |
844 // A class could already be verified, since it has been reflected upon. | |
845 this_oop->link_class(CHECK); | |
846 | |
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847 DTRACE_CLASSINIT_PROBE(required, InstanceKlass::cast(this_oop()), -1); |
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848 |
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849 bool wait = false; |
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850 |
0 | 851 // refer to the JVM book page 47 for description of steps |
852 // Step 1 | |
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853 { |
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854 oop init_lock = this_oop->init_lock(); |
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855 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 856 |
857 Thread *self = THREAD; // it's passed the current thread | |
858 | |
859 // Step 2 | |
860 // If we were to use wait() instead of waitInterruptibly() then | |
861 // we might end up throwing IE from link/symbol resolution sites | |
862 // that aren't expected to throw. This would wreak havoc. See 6320309. | |
863 while(this_oop->is_being_initialized() && !this_oop->is_reentrant_initialization(self)) { | |
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864 wait = true; |
0 | 865 ol.waitUninterruptibly(CHECK); |
866 } | |
867 | |
868 // Step 3 | |
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869 if (this_oop->is_being_initialized() && this_oop->is_reentrant_initialization(self)) { |
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870 DTRACE_CLASSINIT_PROBE_WAIT(recursive, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 871 return; |
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872 } |
0 | 873 |
874 // Step 4 | |
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875 if (this_oop->is_initialized()) { |
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876 DTRACE_CLASSINIT_PROBE_WAIT(concurrent, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 877 return; |
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878 } |
0 | 879 |
880 // Step 5 | |
881 if (this_oop->is_in_error_state()) { | |
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882 DTRACE_CLASSINIT_PROBE_WAIT(erroneous, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 883 ResourceMark rm(THREAD); |
884 const char* desc = "Could not initialize class "; | |
885 const char* className = this_oop->external_name(); | |
886 size_t msglen = strlen(desc) + strlen(className) + 1; | |
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887 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 888 if (NULL == message) { |
889 // Out of memory: can't create detailed error message | |
890 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), className); | |
891 } else { | |
892 jio_snprintf(message, msglen, "%s%s", desc, className); | |
893 THROW_MSG(vmSymbols::java_lang_NoClassDefFoundError(), message); | |
894 } | |
895 } | |
896 | |
897 // Step 6 | |
898 this_oop->set_init_state(being_initialized); | |
899 this_oop->set_init_thread(self); | |
900 } | |
901 | |
902 // Step 7 | |
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903 Klass* super_klass = this_oop->super(); |
6983 | 904 if (super_klass != NULL && !this_oop->is_interface() && super_klass->should_be_initialized()) { |
905 super_klass->initialize(THREAD); | |
0 | 906 |
907 if (HAS_PENDING_EXCEPTION) { | |
908 Handle e(THREAD, PENDING_EXCEPTION); | |
909 CLEAR_PENDING_EXCEPTION; | |
910 { | |
911 EXCEPTION_MARK; | |
912 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); // Locks object, set state, and notify all waiting threads | |
913 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, superclass initialization error is thrown below | |
914 } | |
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915 DTRACE_CLASSINIT_PROBE_WAIT(super__failed, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 916 THROW_OOP(e()); |
917 } | |
918 } | |
919 | |
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920 // Recursively initialize any superinterfaces that declare default methods |
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921 // Only need to recurse if has_default_methods which includes declaring and |
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922 // inheriting default methods |
6934 | 923 if (this_oop->has_default_methods()) { |
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924 this_oop->initialize_super_interfaces(this_oop, CHECK); |
6934 | 925 } |
926 | |
0 | 927 // Step 8 |
928 { | |
929 assert(THREAD->is_Java_thread(), "non-JavaThread in initialize_impl"); | |
930 JavaThread* jt = (JavaThread*)THREAD; | |
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931 DTRACE_CLASSINIT_PROBE_WAIT(clinit, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 932 // Timer includes any side effects of class initialization (resolution, |
933 // etc), but not recursive entry into call_class_initializer(). | |
875
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934 PerfClassTraceTime timer(ClassLoader::perf_class_init_time(), |
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935 ClassLoader::perf_class_init_selftime(), |
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936 ClassLoader::perf_classes_inited(), |
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937 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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938 jt->get_thread_stat()->perf_timers_addr(), |
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939 PerfClassTraceTime::CLASS_CLINIT); |
0 | 940 this_oop->call_class_initializer(THREAD); |
941 } | |
942 | |
943 // Step 9 | |
944 if (!HAS_PENDING_EXCEPTION) { | |
945 this_oop->set_initialization_state_and_notify(fully_initialized, CHECK); | |
946 { ResourceMark rm(THREAD); | |
947 debug_only(this_oop->vtable()->verify(tty, true);) | |
948 } | |
949 } | |
950 else { | |
951 // Step 10 and 11 | |
952 Handle e(THREAD, PENDING_EXCEPTION); | |
953 CLEAR_PENDING_EXCEPTION; | |
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954 // JVMTI has already reported the pending exception |
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955 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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956 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 957 { |
958 EXCEPTION_MARK; | |
959 this_oop->set_initialization_state_and_notify(initialization_error, THREAD); | |
960 CLEAR_PENDING_EXCEPTION; // ignore any exception thrown, class initialization error is thrown below | |
23007
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961 // JVMTI has already reported the pending exception |
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962 // JVMTI internal flag reset is needed in order to report ExceptionInInitializerError |
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963 JvmtiExport::clear_detected_exception((JavaThread*)THREAD); |
0 | 964 } |
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965 DTRACE_CLASSINIT_PROBE_WAIT(error, InstanceKlass::cast(this_oop()), -1,wait); |
1142 | 966 if (e->is_a(SystemDictionary::Error_klass())) { |
0 | 967 THROW_OOP(e()); |
968 } else { | |
969 JavaCallArguments args(e); | |
2177
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970 THROW_ARG(vmSymbols::java_lang_ExceptionInInitializerError(), |
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971 vmSymbols::throwable_void_signature(), |
0 | 972 &args); |
973 } | |
974 } | |
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975 DTRACE_CLASSINIT_PROBE_WAIT(end, InstanceKlass::cast(this_oop()), -1,wait); |
0 | 976 } |
977 | |
978 | |
979 // Note: implementation moved to static method to expose the this pointer. | |
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980 void InstanceKlass::set_initialization_state_and_notify(ClassState state, TRAPS) { |
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981 instanceKlassHandle kh(THREAD, this); |
0 | 982 set_initialization_state_and_notify_impl(kh, state, CHECK); |
983 } | |
984 | |
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985 void InstanceKlass::set_initialization_state_and_notify_impl(instanceKlassHandle this_oop, ClassState state, TRAPS) { |
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986 oop init_lock = this_oop->init_lock(); |
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987 ObjectLocker ol(init_lock, THREAD, init_lock != NULL); |
0 | 988 this_oop->set_init_state(state); |
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989 this_oop->fence_and_clear_init_lock(); |
0 | 990 ol.notify_all(CHECK); |
991 } | |
992 | |
5998
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993 // The embedded _implementor field can only record one implementor. |
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994 // When there are more than one implementors, the _implementor field |
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995 // is set to the interface Klass* itself. Following are the possible |
5998
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996 // values for the _implementor field: |
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997 // NULL - no implementor |
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998 // implementor Klass* - one implementor |
5998
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999 // self - more than one implementor |
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1000 // |
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1001 // The _implementor field only exists for interfaces. |
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1002 void InstanceKlass::add_implementor(Klass* k) { |
0 | 1003 assert(Compile_lock->owned_by_self(), ""); |
5998
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1004 assert(is_interface(), "not interface"); |
0 | 1005 // Filter out my subinterfaces. |
1006 // (Note: Interfaces are never on the subklass list.) | |
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1007 if (InstanceKlass::cast(k)->is_interface()) return; |
0 | 1008 |
1009 // Filter out subclasses whose supers already implement me. | |
1010 // (Note: CHA must walk subclasses of direct implementors | |
1011 // in order to locate indirect implementors.) | |
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1012 Klass* sk = InstanceKlass::cast(k)->super(); |
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1013 if (sk != NULL && InstanceKlass::cast(sk)->implements_interface(this)) |
0 | 1014 // We only need to check one immediate superclass, since the |
1015 // implements_interface query looks at transitive_interfaces. | |
1016 // Any supers of the super have the same (or fewer) transitive_interfaces. | |
1017 return; | |
1018 | |
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1019 Klass* ik = implementor(); |
5998
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1020 if (ik == NULL) { |
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1021 set_implementor(k); |
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1022 } else if (ik != this) { |
5998
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1023 // There is already an implementor. Use itself as an indicator of |
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1024 // more than one implementors. |
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1025 set_implementor(this); |
0 | 1026 } |
1027 | |
1028 // The implementor also implements the transitive_interfaces | |
1029 for (int index = 0; index < local_interfaces()->length(); index++) { | |
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1030 InstanceKlass::cast(local_interfaces()->at(index))->add_implementor(k); |
0 | 1031 } |
1032 } | |
1033 | |
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1034 void InstanceKlass::init_implementor() { |
5998
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1035 if (is_interface()) { |
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1036 set_implementor(NULL); |
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1037 } |
0 | 1038 } |
1039 | |
1040 | |
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1041 void InstanceKlass::process_interfaces(Thread *thread) { |
0 | 1042 // link this class into the implementors list of every interface it implements |
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1043 Klass* this_as_klass_oop = this; |
0 | 1044 for (int i = local_interfaces()->length() - 1; i >= 0; i--) { |
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1045 assert(local_interfaces()->at(i)->is_klass(), "must be a klass"); |
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1046 InstanceKlass* interf = InstanceKlass::cast(local_interfaces()->at(i)); |
0 | 1047 assert(interf->is_interface(), "expected interface"); |
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1048 interf->add_implementor(this_as_klass_oop); |
0 | 1049 } |
1050 } | |
1051 | |
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1052 bool InstanceKlass::can_be_primary_super_slow() const { |
0 | 1053 if (is_interface()) |
1054 return false; | |
1055 else | |
1056 return Klass::can_be_primary_super_slow(); | |
1057 } | |
1058 | |
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1059 GrowableArray<Klass*>* InstanceKlass::compute_secondary_supers(int num_extra_slots) { |
0 | 1060 // The secondaries are the implemented interfaces. |
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1061 InstanceKlass* ik = InstanceKlass::cast(this); |
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1062 Array<Klass*>* interfaces = ik->transitive_interfaces(); |
0 | 1063 int num_secondaries = num_extra_slots + interfaces->length(); |
1064 if (num_secondaries == 0) { | |
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1065 // Must share this for correct bootstrapping! |
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1066 set_secondary_supers(Universe::the_empty_klass_array()); |
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1067 return NULL; |
0 | 1068 } else if (num_extra_slots == 0) { |
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1069 // The secondary super list is exactly the same as the transitive interfaces. |
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1070 // Redefine classes has to be careful not to delete this! |
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1071 set_secondary_supers(interfaces); |
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1072 return NULL; |
0 | 1073 } else { |
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1074 // Copy transitive interfaces to a temporary growable array to be constructed |
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1075 // into the secondary super list with extra slots. |
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1076 GrowableArray<Klass*>* secondaries = new GrowableArray<Klass*>(interfaces->length()); |
0 | 1077 for (int i = 0; i < interfaces->length(); i++) { |
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1078 secondaries->push(interfaces->at(i)); |
0 | 1079 } |
1080 return secondaries; | |
1081 } | |
1082 } | |
1083 | |
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1084 bool InstanceKlass::compute_is_subtype_of(Klass* k) { |
6983 | 1085 if (k->is_interface()) { |
0 | 1086 return implements_interface(k); |
1087 } else { | |
1088 return Klass::compute_is_subtype_of(k); | |
1089 } | |
1090 } | |
1091 | |
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1092 bool InstanceKlass::implements_interface(Klass* k) const { |
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1093 if (this == k) return true; |
6983 | 1094 assert(k->is_interface(), "should be an interface class"); |
0 | 1095 for (int i = 0; i < transitive_interfaces()->length(); i++) { |
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1096 if (transitive_interfaces()->at(i) == k) { |
0 | 1097 return true; |
1098 } | |
1099 } | |
1100 return false; | |
1101 } | |
1102 | |
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1103 bool InstanceKlass::is_same_or_direct_interface(Klass *k) const { |
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1104 // Verify direct super interface |
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1105 if (this == k) return true; |
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1106 assert(k->is_interface(), "should be an interface class"); |
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1107 for (int i = 0; i < local_interfaces()->length(); i++) { |
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1108 if (local_interfaces()->at(i) == k) { |
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1109 return true; |
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1110 } |
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1111 } |
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1112 return false; |
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1113 } |
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1114 |
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1115 objArrayOop InstanceKlass::allocate_objArray(int n, int length, TRAPS) { |
0 | 1116 if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
1117 if (length > arrayOopDesc::max_array_length(T_OBJECT)) { | |
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1118 report_java_out_of_memory("Requested array size exceeds VM limit"); |
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1119 JvmtiExport::post_array_size_exhausted(); |
0 | 1120 THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
1121 } | |
1122 int size = objArrayOopDesc::object_size(length); | |
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1123 Klass* ak = array_klass(n, CHECK_NULL); |
0 | 1124 KlassHandle h_ak (THREAD, ak); |
1125 objArrayOop o = | |
1126 (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL); | |
1127 return o; | |
1128 } | |
1129 | |
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1130 instanceOop InstanceKlass::register_finalizer(instanceOop i, TRAPS) { |
0 | 1131 if (TraceFinalizerRegistration) { |
1132 tty->print("Registered "); | |
1133 i->print_value_on(tty); | |
1134 tty->print_cr(" (" INTPTR_FORMAT ") as finalizable", (address)i); | |
1135 } | |
1136 instanceHandle h_i(THREAD, i); | |
1137 // Pass the handle as argument, JavaCalls::call expects oop as jobjects | |
1138 JavaValue result(T_VOID); | |
1139 JavaCallArguments args(h_i); | |
1140 methodHandle mh (THREAD, Universe::finalizer_register_method()); | |
1141 JavaCalls::call(&result, mh, &args, CHECK_NULL); | |
1142 return h_i(); | |
1143 } | |
1144 | |
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1145 instanceOop InstanceKlass::allocate_instance(TRAPS) { |
0 | 1146 bool has_finalizer_flag = has_finalizer(); // Query before possible GC |
1147 int size = size_helper(); // Query before forming handle. | |
1148 | |
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1149 KlassHandle h_k(THREAD, this); |
0 | 1150 |
1151 instanceOop i; | |
1152 | |
1153 i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL); | |
1154 if (has_finalizer_flag && !RegisterFinalizersAtInit) { | |
1155 i = register_finalizer(i, CHECK_NULL); | |
1156 } | |
1157 return i; | |
1158 } | |
1159 | |
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1160 void InstanceKlass::check_valid_for_instantiation(bool throwError, TRAPS) { |
0 | 1161 if (is_interface() || is_abstract()) { |
1162 ResourceMark rm(THREAD); | |
1163 THROW_MSG(throwError ? vmSymbols::java_lang_InstantiationError() | |
1164 : vmSymbols::java_lang_InstantiationException(), external_name()); | |
1165 } | |
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1166 if (this == SystemDictionary::Class_klass()) { |
0 | 1167 ResourceMark rm(THREAD); |
1168 THROW_MSG(throwError ? vmSymbols::java_lang_IllegalAccessError() | |
1169 : vmSymbols::java_lang_IllegalAccessException(), external_name()); | |
1170 } | |
1171 } | |
1172 | |
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1173 Klass* InstanceKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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1174 instanceKlassHandle this_oop(THREAD, this); |
0 | 1175 return array_klass_impl(this_oop, or_null, n, THREAD); |
1176 } | |
1177 | |
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1178 Klass* InstanceKlass::array_klass_impl(instanceKlassHandle this_oop, bool or_null, int n, TRAPS) { |
0 | 1179 if (this_oop->array_klasses() == NULL) { |
1180 if (or_null) return NULL; | |
1181 | |
1182 ResourceMark rm; | |
1183 JavaThread *jt = (JavaThread *)THREAD; | |
1184 { | |
1185 // Atomic creation of array_klasses | |
1186 MutexLocker mc(Compile_lock, THREAD); // for vtables | |
1187 MutexLocker ma(MultiArray_lock, THREAD); | |
1188 | |
1189 // Check if update has already taken place | |
1190 if (this_oop->array_klasses() == NULL) { | |
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1191 Klass* k = ObjArrayKlass::allocate_objArray_klass(this_oop->class_loader_data(), 1, this_oop, CHECK_NULL); |
0 | 1192 this_oop->set_array_klasses(k); |
1193 } | |
1194 } | |
1195 } | |
1196 // _this will always be set at this point | |
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1197 ObjArrayKlass* oak = (ObjArrayKlass*)this_oop->array_klasses(); |
0 | 1198 if (or_null) { |
1199 return oak->array_klass_or_null(n); | |
1200 } | |
1201 return oak->array_klass(n, CHECK_NULL); | |
1202 } | |
1203 | |
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1204 Klass* InstanceKlass::array_klass_impl(bool or_null, TRAPS) { |
0 | 1205 return array_klass_impl(or_null, 1, THREAD); |
1206 } | |
1207 | |
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1208 void InstanceKlass::call_class_initializer(TRAPS) { |
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1209 instanceKlassHandle ik (THREAD, this); |
0 | 1210 call_class_initializer_impl(ik, THREAD); |
1211 } | |
1212 | |
1213 static int call_class_initializer_impl_counter = 0; // for debugging | |
1214 | |
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1215 Method* InstanceKlass::class_initializer() { |
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1216 Method* clinit = find_method( |
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1217 vmSymbols::class_initializer_name(), vmSymbols::void_method_signature()); |
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1218 if (clinit != NULL && clinit->has_valid_initializer_flags()) { |
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1219 return clinit; |
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1220 } |
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1221 return NULL; |
0 | 1222 } |
1223 | |
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1224 void InstanceKlass::call_class_initializer_impl(instanceKlassHandle this_oop, TRAPS) { |
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1225 if (ReplayCompiles && |
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1226 (ReplaySuppressInitializers == 1 || |
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1227 ReplaySuppressInitializers >= 2 && this_oop->class_loader() != NULL)) { |
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1228 // Hide the existence of the initializer for the purpose of replaying the compile |
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1229 return; |
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1230 } |
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1231 |
0 | 1232 methodHandle h_method(THREAD, this_oop->class_initializer()); |
1233 assert(!this_oop->is_initialized(), "we cannot initialize twice"); | |
1234 if (TraceClassInitialization) { | |
1235 tty->print("%d Initializing ", call_class_initializer_impl_counter++); | |
1236 this_oop->name()->print_value(); | |
1237 tty->print_cr("%s (" INTPTR_FORMAT ")", h_method() == NULL ? "(no method)" : "", (address)this_oop()); | |
1238 } | |
1239 if (h_method() != NULL) { | |
1240 JavaCallArguments args; // No arguments | |
1241 JavaValue result(T_VOID); | |
1242 JavaCalls::call(&result, h_method, &args, CHECK); // Static call (no args) | |
1243 } | |
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1244 |
0 | 1245 } |
1246 | |
1247 | |
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1248 void InstanceKlass::mask_for(methodHandle method, int bci, |
0 | 1249 InterpreterOopMap* entry_for) { |
1250 // Dirty read, then double-check under a lock. | |
1251 if (_oop_map_cache == NULL) { | |
1252 // Otherwise, allocate a new one. | |
1253 MutexLocker x(OopMapCacheAlloc_lock); | |
1254 // First time use. Allocate a cache in C heap | |
1255 if (_oop_map_cache == NULL) { | |
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1256 // Release stores from OopMapCache constructor before assignment |
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1257 // to _oop_map_cache. C++ compilers on ppc do not emit the |
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1258 // required memory barrier only because of the volatile |
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1259 // qualifier of _oop_map_cache. |
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1260 OrderAccess::release_store_ptr(&_oop_map_cache, new OopMapCache()); |
0 | 1261 } |
1262 } | |
1263 // _oop_map_cache is constant after init; lookup below does is own locking. | |
1264 _oop_map_cache->lookup(method, bci, entry_for); | |
1265 } | |
1266 | |
1267 | |
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1268 bool InstanceKlass::find_local_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
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1269 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1270 Symbol* f_name = fs.name(); |
1271 Symbol* f_sig = fs.signature(); | |
0 | 1272 if (f_name == name && f_sig == sig) { |
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1273 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1274 return true; |
1275 } | |
1276 } | |
1277 return false; | |
1278 } | |
1279 | |
1280 | |
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1281 Klass* InstanceKlass::find_interface_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1282 const int n = local_interfaces()->length(); |
1283 for (int i = 0; i < n; i++) { | |
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1284 Klass* intf1 = local_interfaces()->at(i); |
6983 | 1285 assert(intf1->is_interface(), "just checking type"); |
0 | 1286 // search for field in current interface |
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1287 if (InstanceKlass::cast(intf1)->find_local_field(name, sig, fd)) { |
0 | 1288 assert(fd->is_static(), "interface field must be static"); |
1289 return intf1; | |
1290 } | |
1291 // search for field in direct superinterfaces | |
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1292 Klass* intf2 = InstanceKlass::cast(intf1)->find_interface_field(name, sig, fd); |
0 | 1293 if (intf2 != NULL) return intf2; |
1294 } | |
1295 // otherwise field lookup fails | |
1296 return NULL; | |
1297 } | |
1298 | |
1299 | |
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1300 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, fieldDescriptor* fd) const { |
0 | 1301 // search order according to newest JVM spec (5.4.3.2, p.167). |
1302 // 1) search for field in current klass | |
1303 if (find_local_field(name, sig, fd)) { | |
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1304 return const_cast<InstanceKlass*>(this); |
0 | 1305 } |
1306 // 2) search for field recursively in direct superinterfaces | |
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1307 { Klass* intf = find_interface_field(name, sig, fd); |
0 | 1308 if (intf != NULL) return intf; |
1309 } | |
1310 // 3) apply field lookup recursively if superclass exists | |
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1311 { Klass* supr = super(); |
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1312 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, fd); |
0 | 1313 } |
1314 // 4) otherwise field lookup fails | |
1315 return NULL; | |
1316 } | |
1317 | |
1318 | |
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1319 Klass* InstanceKlass::find_field(Symbol* name, Symbol* sig, bool is_static, fieldDescriptor* fd) const { |
0 | 1320 // search order according to newest JVM spec (5.4.3.2, p.167). |
1321 // 1) search for field in current klass | |
1322 if (find_local_field(name, sig, fd)) { | |
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1323 if (fd->is_static() == is_static) return const_cast<InstanceKlass*>(this); |
0 | 1324 } |
1325 // 2) search for field recursively in direct superinterfaces | |
1326 if (is_static) { | |
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1327 Klass* intf = find_interface_field(name, sig, fd); |
0 | 1328 if (intf != NULL) return intf; |
1329 } | |
1330 // 3) apply field lookup recursively if superclass exists | |
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1331 { Klass* supr = super(); |
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1332 if (supr != NULL) return InstanceKlass::cast(supr)->find_field(name, sig, is_static, fd); |
0 | 1333 } |
1334 // 4) otherwise field lookup fails | |
1335 return NULL; | |
1336 } | |
1337 | |
1338 | |
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1339 bool InstanceKlass::find_local_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1340 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
3938 | 1341 if (fs.offset() == offset) { |
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1342 fd->reinitialize(const_cast<InstanceKlass*>(this), fs.index()); |
0 | 1343 if (fd->is_static() == is_static) return true; |
1344 } | |
1345 } | |
1346 return false; | |
1347 } | |
1348 | |
1349 | |
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1350 bool InstanceKlass::find_field_from_offset(int offset, bool is_static, fieldDescriptor* fd) const { |
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1351 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1352 while (klass != NULL) { |
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1353 if (InstanceKlass::cast(klass)->find_local_field_from_offset(offset, is_static, fd)) { |
0 | 1354 return true; |
1355 } | |
6983 | 1356 klass = klass->super(); |
0 | 1357 } |
1358 return false; | |
1359 } | |
1360 | |
1361 | |
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1362 void InstanceKlass::methods_do(void f(Method* method)) { |
0 | 1363 int len = methods()->length(); |
1364 for (int index = 0; index < len; index++) { | |
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1365 Method* m = methods()->at(index); |
0 | 1366 assert(m->is_method(), "must be method"); |
1367 f(m); | |
1368 } | |
1369 } | |
1370 | |
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|
1372 void InstanceKlass::do_local_static_fields(FieldClosure* cl) { |
3938 | 1373 for (JavaFieldStream fs(this); !fs.done(); fs.next()) { |
1374 if (fs.access_flags().is_static()) { | |
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1375 fieldDescriptor& fd = fs.field_descriptor(); |
3938 | 1376 cl->do_field(&fd); |
1377 } | |
0 | 1378 } |
1379 } | |
1380 | |
1381 | |
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1382 void InstanceKlass::do_local_static_fields(void f(fieldDescriptor*, Handle, TRAPS), Handle mirror, TRAPS) { |
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1383 instanceKlassHandle h_this(THREAD, this); |
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1384 do_local_static_fields_impl(h_this, f, mirror, CHECK); |
0 | 1385 } |
1386 | |
1387 | |
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1388 void InstanceKlass::do_local_static_fields_impl(instanceKlassHandle this_k, |
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1389 void f(fieldDescriptor* fd, Handle mirror, TRAPS), Handle mirror, TRAPS) { |
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1390 for (JavaFieldStream fs(this_k()); !fs.done(); fs.next()) { |
3938 | 1391 if (fs.access_flags().is_static()) { |
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1392 fieldDescriptor& fd = fs.field_descriptor(); |
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1393 f(&fd, mirror, CHECK); |
3938 | 1394 } |
0 | 1395 } |
1396 } | |
1397 | |
1398 | |
44
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1399 static int compare_fields_by_offset(int* a, int* b) { |
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1400 return a[0] - b[0]; |
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1401 } |
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1402 |
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1403 void InstanceKlass::do_nonstatic_fields(FieldClosure* cl) { |
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1404 InstanceKlass* super = superklass(); |
0 | 1405 if (super != NULL) { |
1406 super->do_nonstatic_fields(cl); | |
1407 } | |
44
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1408 fieldDescriptor fd; |
3938 | 1409 int length = java_fields_count(); |
44
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1410 // In DebugInfo nonstatic fields are sorted by offset. |
6197 | 1411 int* fields_sorted = NEW_C_HEAP_ARRAY(int, 2*(length+1), mtClass); |
44
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1412 int j = 0; |
3938 | 1413 for (int i = 0; i < length; i += 1) { |
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1414 fd.reinitialize(this, i); |
44
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1415 if (!fd.is_static()) { |
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1416 fields_sorted[j + 0] = fd.offset(); |
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1417 fields_sorted[j + 1] = i; |
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1418 j += 2; |
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1419 } |
0 | 1420 } |
44
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1421 if (j > 0) { |
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1422 length = j; |
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1423 // _sort_Fn is defined in growableArray.hpp. |
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1424 qsort(fields_sorted, length/2, 2*sizeof(int), (_sort_Fn)compare_fields_by_offset); |
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1425 for (int i = 0; i < length; i += 2) { |
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1426 fd.reinitialize(this, fields_sorted[i + 1]); |
44
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1427 assert(!fd.is_static() && fd.offset() == fields_sorted[i], "only nonstatic fields"); |
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|
1428 cl->do_field(&fd); |
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|
1429 } |
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|
1430 } |
6197 | 1431 FREE_C_HEAP_ARRAY(int, fields_sorted, mtClass); |
0 | 1432 } |
1433 | |
1434 | |
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1435 void InstanceKlass::array_klasses_do(void f(Klass* k, TRAPS), TRAPS) { |
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1436 if (array_klasses() != NULL) |
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1437 ArrayKlass::cast(array_klasses())->array_klasses_do(f, THREAD); |
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1438 } |
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1439 |
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1440 void InstanceKlass::array_klasses_do(void f(Klass* k)) { |
0 | 1441 if (array_klasses() != NULL) |
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1442 ArrayKlass::cast(array_klasses())->array_klasses_do(f); |
0 | 1443 } |
1444 | |
1445 #ifdef ASSERT | |
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1446 static int linear_search(Array<Method*>* methods, Symbol* name, Symbol* signature) { |
0 | 1447 int len = methods->length(); |
1448 for (int index = 0; index < len; index++) { | |
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1449 Method* m = methods->at(index); |
0 | 1450 assert(m->is_method(), "must be method"); |
1451 if (m->signature() == signature && m->name() == name) { | |
1452 return index; | |
1453 } | |
1454 } | |
1455 return -1; | |
1456 } | |
1457 #endif | |
1458 | |
6934 | 1459 static int binary_search(Array<Method*>* methods, Symbol* name) { |
0 | 1460 int len = methods->length(); |
1461 // methods are sorted, so do binary search | |
1462 int l = 0; | |
1463 int h = len - 1; | |
1464 while (l <= h) { | |
1465 int mid = (l + h) >> 1; | |
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1466 Method* m = methods->at(mid); |
0 | 1467 assert(m->is_method(), "must be method"); |
1468 int res = m->name()->fast_compare(name); | |
1469 if (res == 0) { | |
6934 | 1470 return mid; |
0 | 1471 } else if (res < 0) { |
1472 l = mid + 1; | |
1473 } else { | |
1474 h = mid - 1; | |
1475 } | |
1476 } | |
6934 | 1477 return -1; |
1478 } | |
1479 | |
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1480 // find_method looks up the name/signature in the local methods array |
6934 | 1481 Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { |
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1482 return find_method_impl(name, signature, false); |
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1483 } |
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1484 |
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1485 Method* InstanceKlass::find_method_impl(Symbol* name, Symbol* signature, bool skipping_overpass) const { |
20785 | 1486 return InstanceKlass::find_method_impl(methods(), name, signature, skipping_overpass, false); |
6934 | 1487 } |
1488 | |
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1489 // find_instance_method looks up the name/signature in the local methods array |
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1490 // and skips over static methods |
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|
1491 Method* InstanceKlass::find_instance_method( |
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|
1492 Array<Method*>* methods, Symbol* name, Symbol* signature) { |
20785 | 1493 Method* meth = InstanceKlass::find_method_impl(methods, name, signature, false, true); |
13414
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1494 return meth; |
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|
1495 } |
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|
1496 |
20785 | 1497 // find_instance_method looks up the name/signature in the local methods array |
1498 // and skips over static methods | |
1499 Method* InstanceKlass::find_instance_method(Symbol* name, Symbol* signature) { | |
1500 return InstanceKlass::find_instance_method(methods(), name, signature); | |
1501 } | |
1502 | |
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1503 // find_method looks up the name/signature in the local methods array |
6934 | 1504 Method* InstanceKlass::find_method( |
1505 Array<Method*>* methods, Symbol* name, Symbol* signature) { | |
20785 | 1506 return InstanceKlass::find_method_impl(methods, name, signature, false, false); |
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1507 } |
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1508 |
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|
1509 Method* InstanceKlass::find_method_impl( |
20785 | 1510 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1511 int hit = find_method_index(methods, name, signature, skipping_overpass, skipping_static); | |
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1512 return hit >= 0 ? methods->at(hit): NULL; |
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|
1513 } |
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|
1514 |
20785 | 1515 bool InstanceKlass::method_matches(Method* m, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
1516 return (m->signature() == signature) && | |
1517 (!skipping_overpass || !m->is_overpass()) && | |
1518 (!skipping_static || !m->is_static()); | |
1519 } | |
1520 | |
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1521 // Used directly for default_methods to find the index into the |
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1522 // default_vtable_indices, and indirectly by find_method |
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|
1523 // find_method_index looks in the local methods array to return the index |
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1524 // of the matching name/signature. If, overpass methods are being ignored, |
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1525 // the search continues to find a potential non-overpass match. This capability |
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|
1526 // is important during method resolution to prefer a static method, for example, |
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|
1527 // over an overpass method. |
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1528 int InstanceKlass::find_method_index( |
20785 | 1529 Array<Method*>* methods, Symbol* name, Symbol* signature, bool skipping_overpass, bool skipping_static) { |
6934 | 1530 int hit = binary_search(methods, name); |
1531 if (hit != -1) { | |
1532 Method* m = methods->at(hit); | |
20785 | 1533 |
6934 | 1534 // Do linear search to find matching signature. First, quick check |
17889
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|
1535 // for common case, ignoring overpasses if requested. |
20785 | 1536 if (method_matches(m, signature, skipping_overpass, skipping_static)) return hit; |
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|
1537 |
6934 | 1538 // search downwards through overloaded methods |
1539 int i; | |
1540 for (i = hit - 1; i >= 0; --i) { | |
1541 Method* m = methods->at(i); | |
1542 assert(m->is_method(), "must be method"); | |
1543 if (m->name() != name) break; | |
20785 | 1544 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1545 } |
1546 // search upwards | |
1547 for (i = hit + 1; i < methods->length(); ++i) { | |
1548 Method* m = methods->at(i); | |
1549 assert(m->is_method(), "must be method"); | |
1550 if (m->name() != name) break; | |
20785 | 1551 if (method_matches(m, signature, skipping_overpass, skipping_static)) return i; |
6934 | 1552 } |
1553 // not found | |
0 | 1554 #ifdef ASSERT |
20785 | 1555 int index = skipping_overpass || skipping_static ? -1 : linear_search(methods, name, signature); |
6934 | 1556 assert(index == -1, err_msg("binary search should have found entry %d", index)); |
0 | 1557 #endif |
6934 | 1558 } |
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1559 return -1; |
0 | 1560 } |
6934 | 1561 int InstanceKlass::find_method_by_name(Symbol* name, int* end) { |
1562 return find_method_by_name(methods(), name, end); | |
1563 } | |
1564 | |
1565 int InstanceKlass::find_method_by_name( | |
1566 Array<Method*>* methods, Symbol* name, int* end_ptr) { | |
1567 assert(end_ptr != NULL, "just checking"); | |
1568 int start = binary_search(methods, name); | |
1569 int end = start + 1; | |
1570 if (start != -1) { | |
1571 while (start - 1 >= 0 && (methods->at(start - 1))->name() == name) --start; | |
1572 while (end < methods->length() && (methods->at(end))->name() == name) ++end; | |
1573 *end_ptr = end; | |
1574 return start; | |
1575 } | |
1576 return -1; | |
1577 } | |
1578 | |
14221
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1579 // uncached_lookup_method searches both the local class methods array and all |
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|
1580 // superclasses methods arrays, skipping any overpass methods in superclasses. |
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1581 Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature, MethodLookupMode mode) const { |
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1582 MethodLookupMode lookup_mode = mode; |
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1583 Klass* klass = const_cast<InstanceKlass*>(this); |
0 | 1584 while (klass != NULL) { |
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|
1585 Method* method = InstanceKlass::cast(klass)->find_method_impl(name, signature, (lookup_mode == skip_overpass)); |
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1586 if (method != NULL) { |
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|
1587 return method; |
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|
1588 } |
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1589 klass = InstanceKlass::cast(klass)->super(); |
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|
1590 lookup_mode = skip_overpass; // Always ignore overpass methods in superclasses |
0 | 1591 } |
1592 return NULL; | |
1593 } | |
1594 | |
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|
1595 #ifdef ASSERT |
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|
1596 // search through class hierarchy and return true if this class or |
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|
1597 // one of the superclasses was redefined |
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|
1598 bool InstanceKlass::has_redefined_this_or_super() const { |
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|
1599 const InstanceKlass* klass = this; |
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|
1600 while (klass != NULL) { |
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|
1601 if (klass->has_been_redefined()) { |
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|
1602 return true; |
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|
1603 } |
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|
1604 klass = InstanceKlass::cast(klass->super()); |
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|
1605 } |
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|
1606 return false; |
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1607 } |
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1608 #endif |
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|
1609 |
12823
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|
1610 // lookup a method in the default methods list then in all transitive interfaces |
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|
1611 // Do NOT return private or static methods |
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|
1612 Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, |
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|
1613 Symbol* signature) const { |
12828
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|
1614 Method* m = NULL; |
12823
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|
1615 if (default_methods() != NULL) { |
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|
1616 m = find_method(default_methods(), name, signature); |
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|
1617 } |
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|
1618 // Look up interfaces |
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|
1619 if (m == NULL) { |
17889
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|
1620 m = lookup_method_in_all_interfaces(name, signature, normal); |
12823
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|
1621 } |
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|
1622 return m; |
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|
1623 } |
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|
1624 |
0 | 1625 // lookup a method in all the interfaces that this class implements |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1626 // Do NOT return private or static methods, new in JDK8 which are not externally visible |
36b97be47bde
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|
1627 // They should only be found in the initial InterfaceMethodRef |
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|
1628 Method* InstanceKlass::lookup_method_in_all_interfaces(Symbol* name, |
14221
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|
1629 Symbol* signature, |
17889
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|
1630 MethodLookupMode mode) const { |
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|
1631 Array<Klass*>* all_ifs = transitive_interfaces(); |
0 | 1632 int num_ifs = all_ifs->length(); |
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|
1633 InstanceKlass *ik = NULL; |
0 | 1634 for (int i = 0; i < num_ifs; i++) { |
6725
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|
1635 ik = InstanceKlass::cast(all_ifs->at(i)); |
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|
1636 Method* m = ik->lookup_method(name, signature); |
14221
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|
1637 if (m != NULL && m->is_public() && !m->is_static() && |
17889
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|
1638 ((mode != skip_defaults) || !m->is_default_method())) { |
0 | 1639 return m; |
1640 } | |
1641 } | |
1642 return NULL; | |
1643 } | |
1644 | |
1645 /* jni_id_for_impl for jfieldIds only */ | |
6725
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|
1646 JNIid* InstanceKlass::jni_id_for_impl(instanceKlassHandle this_oop, int offset) { |
0 | 1647 MutexLocker ml(JfieldIdCreation_lock); |
1648 // Retry lookup after we got the lock | |
1649 JNIid* probe = this_oop->jni_ids() == NULL ? NULL : this_oop->jni_ids()->find(offset); | |
1650 if (probe == NULL) { | |
1651 // Slow case, allocate new static field identifier | |
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|
1652 probe = new JNIid(this_oop(), offset, this_oop->jni_ids()); |
0 | 1653 this_oop->set_jni_ids(probe); |
1654 } | |
1655 return probe; | |
1656 } | |
1657 | |
1658 | |
1659 /* jni_id_for for jfieldIds only */ | |
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|
1660 JNIid* InstanceKlass::jni_id_for(int offset) { |
0 | 1661 JNIid* probe = jni_ids() == NULL ? NULL : jni_ids()->find(offset); |
1662 if (probe == NULL) { | |
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|
1663 probe = jni_id_for_impl(this, offset); |
0 | 1664 } |
1665 return probe; | |
1666 } | |
1667 | |
6725
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|
1668 u2 InstanceKlass::enclosing_method_data(int offset) { |
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6964458: Reimplement class meta-data storage to use native memory
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|
1669 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
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|
1670 if (inner_class_list == NULL) { |
f7c4174b33ba
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|
1671 return 0; |
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diff
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|
1672 } |
f7c4174b33ba
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diff
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|
1673 int length = inner_class_list->length(); |
f7c4174b33ba
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4739
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|
1674 if (length % inner_class_next_offset == 0) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4739
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|
1675 return 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4739
diff
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|
1676 } else { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4739
diff
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|
1677 int index = length - enclosing_method_attribute_size; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1678 assert(offset < enclosing_method_attribute_size, "invalid offset"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
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|
1679 return inner_class_list->at(index + offset); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4739
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|
1680 } |
f7c4174b33ba
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|
1681 } |
f7c4174b33ba
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|
1682 |
6725
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|
1683 void InstanceKlass::set_enclosing_method_indices(u2 class_index, |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
1684 u2 method_index) { |
6725
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|
1685 Array<jushort>* inner_class_list = inner_classes(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
1686 assert (inner_class_list != NULL, "_inner_classes list is not set up"); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
1687 int length = inner_class_list->length(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
1688 if (length % inner_class_next_offset == enclosing_method_attribute_size) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4739
diff
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|
1689 int index = length - enclosing_method_attribute_size; |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1690 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
1691 index + enclosing_method_class_index_offset, class_index); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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|
1692 inner_class_list->at_put( |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
1693 index + enclosing_method_method_index_offset, method_index); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
1694 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
1695 } |
0 | 1696 |
1697 // Lookup or create a jmethodID. | |
977
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974
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|
1698 // This code is called by the VMThread and JavaThreads so the |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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|
1699 // locking has to be done very carefully to avoid deadlocks |
74a5db69c1fe
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|
1700 // and/or other cache consistency problems. |
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974
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|
1701 // |
6725
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|
1702 jmethodID InstanceKlass::get_jmethod_id(instanceKlassHandle ik_h, methodHandle method_h) { |
0 | 1703 size_t idnum = (size_t)method_h->method_idnum(); |
1704 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); | |
1705 size_t length = 0; | |
1706 jmethodID id = NULL; | |
977
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|
1707 |
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|
1708 // We use a double-check locking idiom here because this cache is |
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|
1709 // performance sensitive. In the normal system, this cache only |
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|
1710 // transitions from NULL to non-NULL which is safe because we use |
74a5db69c1fe
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|
1711 // release_set_methods_jmethod_ids() to advertise the new cache. |
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|
1712 // A partially constructed cache should never be seen by a racing |
74a5db69c1fe
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|
1713 // thread. We also use release_store_ptr() to save a new jmethodID |
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974
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|
1714 // in the cache so a partially constructed jmethodID should never be |
74a5db69c1fe
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diff
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|
1715 // seen either. Cache reads of existing jmethodIDs proceed without a |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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diff
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|
1716 // lock, but cache writes of a new jmethodID requires uniqueness and |
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diff
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|
1717 // creation of the cache itself requires no leaks so a lock is |
74a5db69c1fe
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|
1718 // generally acquired in those two cases. |
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diff
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|
1719 // |
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|
1720 // If the RedefineClasses() API has been used, then this cache can |
74a5db69c1fe
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|
1721 // grow and we'll have transitions from non-NULL to bigger non-NULL. |
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|
1722 // Cache creation requires no leaks and we require safety between all |
74a5db69c1fe
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|
1723 // cache accesses and freeing of the old cache so a lock is generally |
74a5db69c1fe
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|
1724 // acquired when the RedefineClasses() API has been used. |
0 | 1725 |
977
74a5db69c1fe
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diff
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|
1726 if (jmeths != NULL) { |
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diff
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|
1727 // the cache already exists |
74a5db69c1fe
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|
1728 if (!ik_h->idnum_can_increment()) { |
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|
1729 // the cache can't grow so we can just get the current values |
74a5db69c1fe
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diff
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|
1730 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
74a5db69c1fe
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parents:
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diff
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|
1731 } else { |
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diff
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|
1732 // cache can grow so we have to be more careful |
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|
1733 if (Threads::number_of_threads() == 0 || |
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diff
changeset
|
1734 SafepointSynchronize::is_at_safepoint()) { |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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diff
changeset
|
1735 // we're single threaded or at a safepoint - no locking needed |
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1736 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1737 } else { |
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1738 MutexLocker ml(JmethodIdCreation_lock); |
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1739 get_jmethod_id_length_value(jmeths, idnum, &length, &id); |
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1740 } |
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1741 } |
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1742 } |
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1743 // implied else: |
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1744 // we need to allocate a cache so default length and id values are good |
0 | 1745 |
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1746 if (jmeths == NULL || // no cache yet |
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1747 length <= idnum || // cache is too short |
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1748 id == NULL) { // cache doesn't contain entry |
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1749 |
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1750 // This function can be called by the VMThread so we have to do all |
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1751 // things that might block on a safepoint before grabbing the lock. |
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1752 // Otherwise, we can deadlock with the VMThread or have a cache |
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1753 // consistency issue. These vars keep track of what we might have |
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1754 // to free after the lock is dropped. |
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1755 jmethodID to_dealloc_id = NULL; |
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1756 jmethodID* to_dealloc_jmeths = NULL; |
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1757 |
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1758 // may not allocate new_jmeths or use it if we allocate it |
0 | 1759 jmethodID* new_jmeths = NULL; |
1760 if (length <= idnum) { | |
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1761 // allocate a new cache that might be used |
0 | 1762 size_t size = MAX2(idnum+1, (size_t)ik_h->idnum_allocated_count()); |
6197 | 1763 new_jmeths = NEW_C_HEAP_ARRAY(jmethodID, size+1, mtClass); |
0 | 1764 memset(new_jmeths, 0, (size+1)*sizeof(jmethodID)); |
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1765 // cache size is stored in element[0], other elements offset by one |
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1766 new_jmeths[0] = (jmethodID)size; |
0 | 1767 } |
1768 | |
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1769 // allocate a new jmethodID that might be used |
0 | 1770 jmethodID new_id = NULL; |
1771 if (method_h->is_old() && !method_h->is_obsolete()) { | |
1772 // The method passed in is old (but not obsolete), we need to use the current version | |
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1773 Method* current_method = ik_h->method_with_idnum((int)idnum); |
0 | 1774 assert(current_method != NULL, "old and but not obsolete, so should exist"); |
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1775 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), current_method); |
0 | 1776 } else { |
1777 // It is the current version of the method or an obsolete method, | |
1778 // use the version passed in | |
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1779 new_id = Method::make_jmethod_id(ik_h->class_loader_data(), method_h()); |
0 | 1780 } |
1781 | |
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1782 if (Threads::number_of_threads() == 0 || |
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1783 SafepointSynchronize::is_at_safepoint()) { |
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1784 // we're single threaded or at a safepoint - no locking needed |
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1785 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1786 &to_dealloc_id, &to_dealloc_jmeths); |
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1787 } else { |
0 | 1788 MutexLocker ml(JmethodIdCreation_lock); |
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1789 id = get_jmethod_id_fetch_or_update(ik_h, idnum, new_id, new_jmeths, |
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1790 &to_dealloc_id, &to_dealloc_jmeths); |
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1791 } |
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1792 |
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1793 // The lock has been dropped so we can free resources. |
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1794 // Free up either the old cache or the new cache if we allocated one. |
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1795 if (to_dealloc_jmeths != NULL) { |
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1796 FreeHeap(to_dealloc_jmeths); |
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1797 } |
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1798 // free up the new ID since it wasn't needed |
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1799 if (to_dealloc_id != NULL) { |
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1800 Method::destroy_jmethod_id(ik_h->class_loader_data(), to_dealloc_id); |
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1801 } |
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1802 } |
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1803 return id; |
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1804 } |
0 | 1805 |
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1806 |
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1807 // Common code to fetch the jmethodID from the cache or update the |
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1808 // cache with the new jmethodID. This function should never do anything |
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1809 // that causes the caller to go to a safepoint or we can deadlock with |
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1810 // the VMThread or have cache consistency issues. |
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1811 // |
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1812 jmethodID InstanceKlass::get_jmethod_id_fetch_or_update( |
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1813 instanceKlassHandle ik_h, size_t idnum, jmethodID new_id, |
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1814 jmethodID* new_jmeths, jmethodID* to_dealloc_id_p, |
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1815 jmethodID** to_dealloc_jmeths_p) { |
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1816 assert(new_id != NULL, "sanity check"); |
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1817 assert(to_dealloc_id_p != NULL, "sanity check"); |
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1818 assert(to_dealloc_jmeths_p != NULL, "sanity check"); |
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1819 assert(Threads::number_of_threads() == 0 || |
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1820 SafepointSynchronize::is_at_safepoint() || |
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1821 JmethodIdCreation_lock->owned_by_self(), "sanity check"); |
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1822 |
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1823 // reacquire the cache - we are locked, single threaded or at a safepoint |
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1824 jmethodID* jmeths = ik_h->methods_jmethod_ids_acquire(); |
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1825 jmethodID id = NULL; |
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1826 size_t length = 0; |
0 | 1827 |
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1828 if (jmeths == NULL || // no cache yet |
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1829 (length = (size_t)jmeths[0]) <= idnum) { // cache is too short |
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1830 if (jmeths != NULL) { |
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1831 // copy any existing entries from the old cache |
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1832 for (size_t index = 0; index < length; index++) { |
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1833 new_jmeths[index+1] = jmeths[index+1]; |
0 | 1834 } |
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1835 *to_dealloc_jmeths_p = jmeths; // save old cache for later delete |
0 | 1836 } |
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1837 ik_h->release_set_methods_jmethod_ids(jmeths = new_jmeths); |
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1838 } else { |
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1839 // fetch jmethodID (if any) from the existing cache |
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1840 id = jmeths[idnum+1]; |
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1841 *to_dealloc_jmeths_p = new_jmeths; // save new cache for later delete |
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1842 } |
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1843 if (id == NULL) { |
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1844 // No matching jmethodID in the existing cache or we have a new |
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1845 // cache or we just grew the cache. This cache write is done here |
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1846 // by the first thread to win the foot race because a jmethodID |
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1847 // needs to be unique once it is generally available. |
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1848 id = new_id; |
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1849 |
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1850 // The jmethodID cache can be read while unlocked so we have to |
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1851 // make sure the new jmethodID is complete before installing it |
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1852 // in the cache. |
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1853 OrderAccess::release_store_ptr(&jmeths[idnum+1], id); |
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1854 } else { |
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1855 *to_dealloc_id_p = new_id; // save new id for later delete |
0 | 1856 } |
1857 return id; | |
1858 } | |
1859 | |
1860 | |
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1861 // Common code to get the jmethodID cache length and the jmethodID |
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1862 // value at index idnum if there is one. |
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1863 // |
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1864 void InstanceKlass::get_jmethod_id_length_value(jmethodID* cache, |
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1865 size_t idnum, size_t *length_p, jmethodID* id_p) { |
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1866 assert(cache != NULL, "sanity check"); |
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1867 assert(length_p != NULL, "sanity check"); |
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1868 assert(id_p != NULL, "sanity check"); |
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1869 |
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1870 // cache size is stored in element[0], other elements offset by one |
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1871 *length_p = (size_t)cache[0]; |
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1872 if (*length_p <= idnum) { // cache is too short |
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1873 *id_p = NULL; |
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1874 } else { |
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1875 *id_p = cache[idnum+1]; // fetch jmethodID (if any) |
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1876 } |
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1877 } |
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1878 |
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1879 |
0 | 1880 // Lookup a jmethodID, NULL if not found. Do no blocking, no allocations, no handles |
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1881 jmethodID InstanceKlass::jmethod_id_or_null(Method* method) { |
0 | 1882 size_t idnum = (size_t)method->method_idnum(); |
1883 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
1884 size_t length; // length assigned as debugging crumb | |
1885 jmethodID id = NULL; | |
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1886 if (jmeths != NULL && // If there is a cache |
0 | 1887 (length = (size_t)jmeths[0]) > idnum) { // and if it is long enough, |
1888 id = jmeths[idnum+1]; // Look up the id (may be NULL) | |
1889 } | |
1890 return id; | |
1891 } | |
1892 | |
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1893 int nmethodBucket::decrement() { |
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1894 return Atomic::add(-1, (volatile int *)&_count); |
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1895 } |
0 | 1896 |
1897 // | |
1898 // Walk the list of dependent nmethods searching for nmethods which | |
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1899 // are dependent on the changes that were passed in and mark them for |
0 | 1900 // deoptimization. Returns the number of nmethods found. |
1901 // | |
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1902 int InstanceKlass::mark_dependent_nmethods(DepChange& changes) { |
0 | 1903 assert_locked_or_safepoint(CodeCache_lock); |
1904 int found = 0; | |
1905 nmethodBucket* b = _dependencies; | |
1906 while (b != NULL) { | |
1907 nmethod* nm = b->get_nmethod(); | |
1908 // since dependencies aren't removed until an nmethod becomes a zombie, | |
1909 // the dependency list may contain nmethods which aren't alive. | |
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1910 if (b->count() > 0 && nm->is_alive() && !nm->is_marked_for_deoptimization() && nm->check_dependency_on(changes)) { |
0 | 1911 if (TraceDependencies) { |
1912 ResourceMark rm; | |
1913 tty->print_cr("Marked for deoptimization"); | |
1914 tty->print_cr(" context = %s", this->external_name()); | |
1915 changes.print(); | |
1916 nm->print(); | |
1917 nm->print_dependencies(); | |
1918 } | |
1919 nm->mark_for_deoptimization(); | |
1920 found++; | |
1921 } | |
1922 b = b->next(); | |
1923 } | |
1924 return found; | |
1925 } | |
1926 | |
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1927 void InstanceKlass::clean_dependent_nmethods() { |
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1928 assert_locked_or_safepoint(CodeCache_lock); |
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1929 |
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1930 if (has_unloaded_dependent()) { |
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1931 nmethodBucket* b = _dependencies; |
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1932 nmethodBucket* last = NULL; |
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1933 while (b != NULL) { |
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1934 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1935 |
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1936 nmethodBucket* next = b->next(); |
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1937 |
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1938 if (b->count() == 0) { |
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1939 if (last == NULL) { |
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1940 _dependencies = next; |
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1941 } else { |
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1942 last->set_next(next); |
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1943 } |
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1944 delete b; |
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1945 // last stays the same. |
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1946 } else { |
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1947 last = b; |
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1948 } |
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1949 |
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1950 b = next; |
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1951 } |
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1952 set_has_unloaded_dependent(false); |
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1953 } |
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1954 #ifdef ASSERT |
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1955 else { |
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1956 // Verification |
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1957 for (nmethodBucket* b = _dependencies; b != NULL; b = b->next()) { |
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1958 assert(b->count() >= 0, err_msg("bucket count: %d", b->count())); |
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1959 assert(b->count() != 0, "empty buckets need to be cleaned"); |
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1960 } |
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1961 } |
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1962 #endif |
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1963 } |
0 | 1964 |
1965 // | |
1966 // Add an nmethodBucket to the list of dependencies for this nmethod. | |
1967 // It's possible that an nmethod has multiple dependencies on this klass | |
1968 // so a count is kept for each bucket to guarantee that creation and | |
1969 // deletion of dependencies is consistent. | |
1970 // | |
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1971 void InstanceKlass::add_dependent_nmethod(nmethod* nm) { |
0 | 1972 assert_locked_or_safepoint(CodeCache_lock); |
1973 nmethodBucket* b = _dependencies; | |
1974 nmethodBucket* last = NULL; | |
1975 while (b != NULL) { | |
1976 if (nm == b->get_nmethod()) { | |
1977 b->increment(); | |
1978 return; | |
1979 } | |
1980 b = b->next(); | |
1981 } | |
1982 _dependencies = new nmethodBucket(nm, _dependencies); | |
1983 } | |
1984 | |
1985 | |
1986 // | |
1987 // Decrement count of the nmethod in the dependency list and remove | |
1988 // the bucket competely when the count goes to 0. This method must | |
1989 // find a corresponding bucket otherwise there's a bug in the | |
1990 // recording of dependecies. | |
1991 // | |
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1992 void InstanceKlass::remove_dependent_nmethod(nmethod* nm, bool delete_immediately) { |
0 | 1993 assert_locked_or_safepoint(CodeCache_lock); |
1994 nmethodBucket* b = _dependencies; | |
1995 nmethodBucket* last = NULL; | |
1996 while (b != NULL) { | |
1997 if (nm == b->get_nmethod()) { | |
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1998 int val = b->decrement(); |
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1999 guarantee(val >= 0, err_msg("Underflow: %d", val)); |
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2000 if (val == 0) { |
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2001 if (delete_immediately) { |
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2002 if (last == NULL) { |
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2003 _dependencies = b->next(); |
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2004 } else { |
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2005 last->set_next(b->next()); |
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2006 } |
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2007 delete b; |
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2008 } else { |
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2009 // The deletion of this entry is deferred until a later, potentially parallel GC phase. |
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2010 set_has_unloaded_dependent(true); |
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2011 } |
0 | 2012 } |
2013 return; | |
2014 } | |
2015 last = b; | |
2016 b = b->next(); | |
2017 } | |
2018 #ifdef ASSERT | |
2019 tty->print_cr("### %s can't find dependent nmethod:", this->external_name()); | |
2020 nm->print(); | |
2021 #endif // ASSERT | |
2022 ShouldNotReachHere(); | |
2023 } | |
2024 | |
2025 | |
2026 #ifndef PRODUCT | |
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2027 void InstanceKlass::print_dependent_nmethods(bool verbose) { |
0 | 2028 nmethodBucket* b = _dependencies; |
2029 int idx = 0; | |
2030 while (b != NULL) { | |
2031 nmethod* nm = b->get_nmethod(); | |
2032 tty->print("[%d] count=%d { ", idx++, b->count()); | |
2033 if (!verbose) { | |
2034 nm->print_on(tty, "nmethod"); | |
2035 tty->print_cr(" } "); | |
2036 } else { | |
2037 nm->print(); | |
2038 nm->print_dependencies(); | |
2039 tty->print_cr("--- } "); | |
2040 } | |
2041 b = b->next(); | |
2042 } | |
2043 } | |
2044 | |
2045 | |
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2046 bool InstanceKlass::is_dependent_nmethod(nmethod* nm) { |
0 | 2047 nmethodBucket* b = _dependencies; |
2048 while (b != NULL) { | |
2049 if (nm == b->get_nmethod()) { | |
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2050 #ifdef ASSERT |
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2051 int count = b->count(); |
20279 | 2052 assert(count >= 0, err_msg("count shouldn't be negative: %d", count)); |
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2053 #endif |
0 | 2054 return true; |
2055 } | |
2056 b = b->next(); | |
2057 } | |
2058 return false; | |
2059 } | |
2060 #endif //PRODUCT | |
2061 | |
2062 | |
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2063 // Garbage collection |
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2064 |
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2065 #ifdef ASSERT |
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2066 template <class T> void assert_is_in(T *p) { |
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2067 T heap_oop = oopDesc::load_heap_oop(p); |
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2068 if (!oopDesc::is_null(heap_oop)) { |
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2069 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2070 assert(Universe::heap()->is_in(o), "should be in heap"); |
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2071 } |
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2072 } |
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2073 template <class T> void assert_is_in_closed_subset(T *p) { |
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2074 T heap_oop = oopDesc::load_heap_oop(p); |
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2075 if (!oopDesc::is_null(heap_oop)) { |
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2076 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2077 assert(Universe::heap()->is_in_closed_subset(o), |
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2078 err_msg("should be in closed *p " INTPTR_FORMAT " " INTPTR_FORMAT, (address)p, (address)o)); |
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2079 } |
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2080 } |
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2081 template <class T> void assert_is_in_reserved(T *p) { |
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2082 T heap_oop = oopDesc::load_heap_oop(p); |
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2083 if (!oopDesc::is_null(heap_oop)) { |
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2084 oop o = oopDesc::decode_heap_oop_not_null(heap_oop); |
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2085 assert(Universe::heap()->is_in_reserved(o), "should be in reserved"); |
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2086 } |
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2087 } |
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2088 template <class T> void assert_nothing(T *p) {} |
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2089 |
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2090 #else |
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2091 template <class T> void assert_is_in(T *p) {} |
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2092 template <class T> void assert_is_in_closed_subset(T *p) {} |
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2093 template <class T> void assert_is_in_reserved(T *p) {} |
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2094 template <class T> void assert_nothing(T *p) {} |
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2095 #endif // ASSERT |
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2096 |
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2097 // |
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2098 // Macros that iterate over areas of oops which are specialized on type of |
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2099 // oop pointer either narrow or wide, depending on UseCompressedOops |
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2100 // |
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2101 // Parameters are: |
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2102 // T - type of oop to point to (either oop or narrowOop) |
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2103 // start_p - starting pointer for region to iterate over |
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2104 // count - number of oops or narrowOops to iterate over |
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2105 // do_oop - action to perform on each oop (it's arbitrary C code which |
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2106 // makes it more efficient to put in a macro rather than making |
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2107 // it a template function) |
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2108 // assert_fn - assert function which is template function because performance |
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2109 // doesn't matter when enabled. |
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2110 #define InstanceKlass_SPECIALIZED_OOP_ITERATE( \ |
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2111 T, start_p, count, do_oop, \ |
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2112 assert_fn) \ |
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2113 { \ |
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2114 T* p = (T*)(start_p); \ |
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2115 T* const end = p + (count); \ |
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2116 while (p < end) { \ |
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2117 (assert_fn)(p); \ |
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2118 do_oop; \ |
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2119 ++p; \ |
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2120 } \ |
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2121 } |
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2122 |
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2123 #define InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE( \ |
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2124 T, start_p, count, do_oop, \ |
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2125 assert_fn) \ |
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2126 { \ |
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2127 T* const start = (T*)(start_p); \ |
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2128 T* p = start + (count); \ |
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2129 while (start < p) { \ |
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2130 --p; \ |
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2131 (assert_fn)(p); \ |
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2132 do_oop; \ |
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2133 } \ |
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2134 } |
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2135 |
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2136 #define InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \ |
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2137 T, start_p, count, low, high, \ |
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2138 do_oop, assert_fn) \ |
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2139 { \ |
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2140 T* const l = (T*)(low); \ |
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2141 T* const h = (T*)(high); \ |
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2142 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \ |
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2143 mask_bits((intptr_t)h, sizeof(T)-1) == 0, \ |
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2144 "bounded region must be properly aligned"); \ |
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2145 T* p = (T*)(start_p); \ |
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2146 T* end = p + (count); \ |
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2147 if (p < l) p = l; \ |
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2148 if (end > h) end = h; \ |
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2149 while (p < end) { \ |
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2150 (assert_fn)(p); \ |
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2151 do_oop; \ |
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2152 ++p; \ |
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2153 } \ |
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2154 } |
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2155 |
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2156 |
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2157 // The following macros call specialized macros, passing either oop or |
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2158 // narrowOop as the specialization type. These test the UseCompressedOops |
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2159 // flag. |
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2160 #define InstanceKlass_OOP_MAP_ITERATE(obj, do_oop, assert_fn) \ |
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2161 { \ |
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2162 /* Compute oopmap block range. The common case \ |
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2163 is nonstatic_oop_map_size == 1. */ \ |
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2164 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2165 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2166 if (UseCompressedOops) { \ |
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2167 while (map < end_map) { \ |
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2168 InstanceKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ |
938 | 2169 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2170 do_oop, assert_fn) \ |
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2171 ++map; \ |
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2172 } \ |
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2173 } else { \ |
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2174 while (map < end_map) { \ |
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2175 InstanceKlass_SPECIALIZED_OOP_ITERATE(oop, \ |
938 | 2176 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2177 do_oop, assert_fn) \ |
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2178 ++map; \ |
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2179 } \ |
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2180 } \ |
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2181 } |
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2182 |
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2183 #define InstanceKlass_OOP_MAP_REVERSE_ITERATE(obj, do_oop, assert_fn) \ |
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2184 { \ |
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2185 OopMapBlock* const start_map = start_of_nonstatic_oop_maps(); \ |
938 | 2186 OopMapBlock* map = start_map + nonstatic_oop_map_count(); \ |
113
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2187 if (UseCompressedOops) { \ |
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2188 while (start_map < map) { \ |
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2189 --map; \ |
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2190 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(narrowOop, \ |
938 | 2191 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2192 do_oop, assert_fn) \ |
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2193 } \ |
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2194 } else { \ |
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2195 while (start_map < map) { \ |
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2196 --map; \ |
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2197 InstanceKlass_SPECIALIZED_OOP_REVERSE_ITERATE(oop, \ |
938 | 2198 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2199 do_oop, assert_fn) \ |
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2200 } \ |
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2201 } \ |
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2202 } |
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2203 |
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2204 #define InstanceKlass_BOUNDED_OOP_MAP_ITERATE(obj, low, high, do_oop, \ |
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2205 assert_fn) \ |
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2206 { \ |
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2207 /* Compute oopmap block range. The common case is \ |
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2208 nonstatic_oop_map_size == 1, so we accept the \ |
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2209 usually non-existent extra overhead of examining \ |
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2210 all the maps. */ \ |
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2211 OopMapBlock* map = start_of_nonstatic_oop_maps(); \ |
938 | 2212 OopMapBlock* const end_map = map + nonstatic_oop_map_count(); \ |
113
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2213 if (UseCompressedOops) { \ |
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2214 while (map < end_map) { \ |
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2215 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ |
938 | 2216 obj->obj_field_addr<narrowOop>(map->offset()), map->count(), \ |
113
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2217 low, high, \ |
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2218 do_oop, assert_fn) \ |
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2219 ++map; \ |
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2220 } \ |
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2221 } else { \ |
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2222 while (map < end_map) { \ |
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2223 InstanceKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ |
938 | 2224 obj->obj_field_addr<oop>(map->offset()), map->count(), \ |
113
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2225 low, high, \ |
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2226 do_oop, assert_fn) \ |
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2227 ++map; \ |
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2228 } \ |
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2229 } \ |
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2230 } |
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2231 |
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2232 void InstanceKlass::oop_follow_contents(oop obj) { |
113
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2233 assert(obj != NULL, "can't follow the content of NULL object"); |
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2234 MarkSweep::follow_klass(obj->klass()); |
113
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2235 InstanceKlass_OOP_MAP_ITERATE( \ |
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2236 obj, \ |
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2237 MarkSweep::mark_and_push(p), \ |
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2238 assert_is_in_closed_subset) |
0 | 2239 } |
2240 | |
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2241 #if INCLUDE_ALL_GCS |
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2242 void InstanceKlass::oop_follow_contents(ParCompactionManager* cm, |
0 | 2243 oop obj) { |
113
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2244 assert(obj != NULL, "can't follow the content of NULL object"); |
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2245 PSParallelCompact::follow_klass(cm, obj->klass()); |
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2246 // Only mark the header and let the scan of the meta-data mark |
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2247 // everything else. |
113
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2248 InstanceKlass_OOP_MAP_ITERATE( \ |
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2249 obj, \ |
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2250 PSParallelCompact::mark_and_push(cm, p), \ |
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2251 assert_is_in) |
0 | 2252 } |
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2253 #endif // INCLUDE_ALL_GCS |
0 | 2254 |
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2255 // closure's do_metadata() method dictates whether the given closure should be |
0 | 2256 // applied to the klass ptr in the object header. |
2257 | |
342
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2258 #define InstanceKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
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2259 \ |
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2260 int InstanceKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
113
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2261 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2262 /* header */ \ |
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2263 if_do_metadata_checked(closure, nv_suffix) { \ |
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2264 closure->do_klass##nv_suffix(obj->klass()); \ |
113
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2265 } \ |
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2266 InstanceKlass_OOP_MAP_ITERATE( \ |
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2267 obj, \ |
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2268 SpecializationStats:: \ |
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2269 record_do_oop_call##nv_suffix(SpecializationStats::ik); \ |
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2270 (closure)->do_oop##nv_suffix(p), \ |
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2271 assert_is_in_closed_subset) \ |
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2272 return size_helper(); \ |
0 | 2273 } |
2274 | |
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2275 #if INCLUDE_ALL_GCS |
342
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2276 #define InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
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2277 \ |
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2278 int InstanceKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, \ |
342
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2279 OopClosureType* closure) { \ |
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2280 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik); \ |
20268
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2281 \ |
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2282 assert_should_ignore_metadata(closure, nv_suffix); \ |
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2283 \ |
342
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2284 /* instance variables */ \ |
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2285 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2286 obj, \ |
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2287 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::ik);\ |
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2288 (closure)->do_oop##nv_suffix(p), \ |
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2289 assert_is_in_closed_subset) \ |
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2290 return size_helper(); \ |
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2291 } |
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2292 #endif // INCLUDE_ALL_GCS |
342
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2293 |
113
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2294 #define InstanceKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
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2295 \ |
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2296 int InstanceKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ |
113
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2297 OopClosureType* closure, \ |
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2298 MemRegion mr) { \ |
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2299 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::ik);\ |
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2300 if_do_metadata_checked(closure, nv_suffix) { \ |
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2301 if (mr.contains(obj)) { \ |
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2302 closure->do_klass##nv_suffix(obj->klass()); \ |
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2303 } \ |
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2304 } \ |
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2305 InstanceKlass_BOUNDED_OOP_MAP_ITERATE( \ |
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2306 obj, mr.start(), mr.end(), \ |
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2307 (closure)->do_oop##nv_suffix(p), \ |
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2308 assert_is_in_closed_subset) \ |
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2309 return size_helper(); \ |
0 | 2310 } |
2311 | |
2312 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN) | |
342
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2313 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN) |
0 | 2314 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
342
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2315 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_DEFN_m) |
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2316 #if INCLUDE_ALL_GCS |
342
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2317 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2318 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
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2319 #endif // INCLUDE_ALL_GCS |
0 | 2320 |
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2321 int InstanceKlass::oop_adjust_pointers(oop obj) { |
0 | 2322 int size = size_helper(); |
113
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2323 InstanceKlass_OOP_MAP_ITERATE( \ |
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2324 obj, \ |
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2325 MarkSweep::adjust_pointer(p), \ |
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2326 assert_is_in) |
0 | 2327 return size; |
2328 } | |
2329 | |
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2330 #if INCLUDE_ALL_GCS |
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2331 void InstanceKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
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2332 InstanceKlass_OOP_MAP_REVERSE_ITERATE( \ |
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2333 obj, \ |
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2334 if (PSScavenge::should_scavenge(p)) { \ |
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2335 pm->claim_or_forward_depth(p); \ |
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2336 }, \ |
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2337 assert_nothing ) |
0 | 2338 } |
2339 | |
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2340 int InstanceKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
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2341 int size = size_helper(); |
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2342 InstanceKlass_OOP_MAP_ITERATE( \ |
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52
diff
changeset
|
2343 obj, \ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
2344 PSParallelCompact::adjust_pointer(p), \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2345 assert_is_in) |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2346 return size; |
0 | 2347 } |
2348 | |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
7610
diff
changeset
|
2349 #endif // INCLUDE_ALL_GCS |
0 | 2350 |
23463
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2351 void InstanceKlass::clean_weak_instanceklass_links(BoolObjectClosure* is_alive) { |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2352 clean_implementors_list(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2353 clean_method_data(is_alive); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2354 |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2355 clean_dependent_nmethods(); |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2356 } |
5cece4584b8e
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
23182
diff
changeset
|
2357 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2358 void InstanceKlass::clean_implementors_list(BoolObjectClosure* is_alive) { |
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20268
diff
changeset
|
2359 assert(class_loader_data()->is_alive(is_alive), "this klass should be live"); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2360 if (is_interface()) { |
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2361 if (ClassUnloading) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2362 Klass* impl = implementor(); |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2363 if (impl != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2364 if (!impl->is_loader_alive(is_alive)) { |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2365 // remove this guy |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2366 Klass** klass = adr_implementor(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2367 assert(klass != NULL, "null klass"); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2368 if (klass != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2369 *klass = NULL; |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
changeset
|
2370 } |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5969
diff
changeset
|
2371 } |
0 | 2372 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2373 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2374 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2375 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2376 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2377 void InstanceKlass::clean_method_data(BoolObjectClosure* is_alive) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2378 for (int m = 0; m < methods()->length(); m++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2379 MethodData* mdo = methods()->at(m)->method_data(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2380 if (mdo != NULL) { |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14378
diff
changeset
|
2381 mdo->clean_method_data(is_alive); |
0 | 2382 } |
2383 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2384 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2385 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2386 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2387 static void remove_unshareable_in_class(Klass* k) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2388 // remove klass's unshareable info |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2389 k->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2390 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2391 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2392 void InstanceKlass::remove_unshareable_info() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2393 Klass::remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2394 // Unlink the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2395 if (is_linked()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2396 unlink_class(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2397 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2398 init_implementor(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2399 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2400 constants()->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2401 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2402 for (int i = 0; i < methods()->length(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2403 Method* m = methods()->at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2404 m->remove_unshareable_info(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2405 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2406 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2407 // do array classes also. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2408 array_klasses_do(remove_unshareable_in_class); |
0 | 2409 } |
2410 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2411 static void restore_unshareable_in_class(Klass* k, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2412 // Array classes have null protection domain. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2413 // --> see ArrayKlass::complete_create_array_klass() |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2414 k->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK); |
0 | 2415 } |
2416 | |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2417 void InstanceKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, TRAPS) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2418 Klass::restore_unshareable_info(loader_data, protection_domain, CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2419 instanceKlassHandle ik(THREAD, this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2420 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2421 Array<Method*>* methods = ik->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2422 int num_methods = methods->length(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2423 for (int index2 = 0; index2 < num_methods; ++index2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2424 methodHandle m(THREAD, methods->at(index2)); |
17883
9428a0b94204
8028497: SIGSEGV at ClassLoaderData::oops_do(OopClosure*, KlassClosure*, bool)
coleenp
parents:
17810
diff
changeset
|
2425 m->restore_unshareable_info(CHECK); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2426 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2427 if (JvmtiExport::has_redefined_a_class()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2428 // Reinitialize vtable because RedefineClasses may have changed some |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2429 // entries in this vtable for super classes so the CDS vtable might |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2430 // point to old or obsolete entries. RedefineClasses doesn't fix up |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2431 // vtables in the shared system dictionary, only the main one. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2432 // It also redefines the itable too so fix that too. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2433 ResourceMark rm(THREAD); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2434 ik->vtable()->initialize_vtable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2435 ik->itable()->initialize_itable(false, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2436 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2437 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2438 // restore constant pool resolved references |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2439 ik->constants()->restore_unshareable_info(CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2440 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2441 ik->array_klasses_do(restore_unshareable_in_class, CHECK); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2442 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2443 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2444 // returns true IFF is_in_error_state() has been changed as a result of this call. |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2445 bool InstanceKlass::check_sharing_error_state() { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2446 assert(DumpSharedSpaces, "should only be called during dumping"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2447 bool old_state = is_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2448 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2449 if (!is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2450 bool bad = false; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2451 for (InstanceKlass* sup = java_super(); sup; sup = sup->java_super()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2452 if (sup->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2453 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2454 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2455 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2456 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2457 if (!bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2458 Array<Klass*>* interfaces = transitive_interfaces(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2459 for (int i = 0; i < interfaces->length(); i++) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2460 Klass* iface = interfaces->at(i); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2461 if (InstanceKlass::cast(iface)->is_in_error_state()) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2462 bad = true; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2463 break; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2464 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2465 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2466 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2467 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2468 if (bad) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2469 set_in_error_state(); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2470 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2471 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2472 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2473 return (old_state != is_in_error_state()); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2474 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20279
diff
changeset
|
2475 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2476 static void clear_all_breakpoints(Method* m) { |
0 | 2477 m->clear_all_breakpoints(); |
2478 } | |
2479 | |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2480 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2481 void InstanceKlass::notify_unload_class(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2482 // notify the debugger |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2483 if (JvmtiExport::should_post_class_unload()) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2484 JvmtiExport::post_class_unload(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2485 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2486 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2487 // notify ClassLoadingService of class unload |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2488 ClassLoadingService::notify_class_unloaded(ik); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2489 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2490 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2491 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) { |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2492 // Clean up C heap |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2493 ik->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2494 ik->constants()->release_C_heap_structures(); |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2495 } |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2496 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2497 void InstanceKlass::release_C_heap_structures() { |
10149
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2498 |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2499 // Can't release the constant pool here because the constant pool can be |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2500 // deallocated separately from the InstanceKlass for default methods and |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2501 // redefine classes. |
d587a5c30bd8
8011803: release_C_heap_structures is never called for anonymous classes.
coleenp
parents:
10133
diff
changeset
|
2502 |
0 | 2503 // Deallocate oop map cache |
2504 if (_oop_map_cache != NULL) { | |
2505 delete _oop_map_cache; | |
2506 _oop_map_cache = NULL; | |
2507 } | |
2508 | |
2509 // Deallocate JNI identifiers for jfieldIDs | |
2510 JNIid::deallocate(jni_ids()); | |
2511 set_jni_ids(NULL); | |
2512 | |
2513 jmethodID* jmeths = methods_jmethod_ids_acquire(); | |
2514 if (jmeths != (jmethodID*)NULL) { | |
2515 release_set_methods_jmethod_ids(NULL); | |
2516 FreeHeap(jmeths); | |
2517 } | |
2518 | |
10347
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2519 // Deallocate MemberNameTable |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2520 { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2521 Mutex* lock_or_null = SafepointSynchronize::is_at_safepoint() ? NULL : MemberNameTable_lock; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2522 MutexLockerEx ml(lock_or_null, Mutex::_no_safepoint_check_flag); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2523 MemberNameTable* mnt = member_names(); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2524 if (mnt != NULL) { |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2525 delete mnt; |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2526 set_member_names(NULL); |
6c138b9851fb
8013945: CMS fatal error: must own lock MemberNameTable_lock
sspitsyn
parents:
10345
diff
changeset
|
2527 } |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2528 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
2529 |
0 | 2530 // release dependencies |
2531 nmethodBucket* b = _dependencies; | |
2532 _dependencies = NULL; | |
2533 while (b != NULL) { | |
2534 nmethodBucket* next = b->next(); | |
2535 delete b; | |
2536 b = next; | |
2537 } | |
2538 | |
2539 // Deallocate breakpoint records | |
2540 if (breakpoints() != 0x0) { | |
2541 methods_do(clear_all_breakpoints); | |
2542 assert(breakpoints() == 0x0, "should have cleared breakpoints"); | |
2543 } | |
2544 | |
2545 // deallocate information about previous versions | |
2546 if (_previous_versions != NULL) { | |
2547 for (int i = _previous_versions->length() - 1; i >= 0; i--) { | |
2548 PreviousVersionNode * pv_node = _previous_versions->at(i); | |
2549 delete pv_node; | |
2550 } | |
2551 delete _previous_versions; | |
2552 _previous_versions = NULL; | |
2553 } | |
2554 | |
2555 // deallocate the cached class file | |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2556 if (_cached_class_file != NULL) { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2557 os::free(_cached_class_file, mtClass); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
2558 _cached_class_file = NULL; |
0 | 2559 } |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2560 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2561 // Decrement symbol reference counts associated with the unloaded class. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2562 if (_name != NULL) _name->decrement_refcount(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2563 // unreference array name derived from this class name (arrays of an unloaded |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2564 // class can't be referenced anymore). |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2565 if (_array_name != NULL) _array_name->decrement_refcount(); |
6203
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2566 if (_source_debug_extension != NULL) FREE_C_HEAP_ARRAY(char, _source_debug_extension, mtClass); |
7464
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2567 |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2568 assert(_total_instanceKlass_count >= 1, "Sanity check"); |
ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
zgu
parents:
7180
diff
changeset
|
2569 Atomic::dec(&_total_instanceKlass_count); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2570 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
2571 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2572 void InstanceKlass::set_source_debug_extension(char* array, int length) { |
6203
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2573 if (array == NULL) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2574 _source_debug_extension = NULL; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2575 } else { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2576 // Adding one to the attribute length in order to store a null terminator |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2577 // character could cause an overflow because the attribute length is |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2578 // already coded with an u4 in the classfile, but in practice, it's |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2579 // unlikely to happen. |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2580 assert((length+1) > length, "Overflow checking"); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2581 char* sde = NEW_C_HEAP_ARRAY(char, (length + 1), mtClass); |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2582 for (int i = 0; i < length; i++) { |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2583 sde[i] = array[i]; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2584 } |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2585 sde[length] = '\0'; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2586 _source_debug_extension = sde; |
04ade88d9712
6294277: java -Xdebug crashes on SourceDebugExtension attribute larger than 64K
fparain
parents:
6197
diff
changeset
|
2587 } |
0 | 2588 } |
2589 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2590 address InstanceKlass::static_field_addr(int offset) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12287
diff
changeset
|
2591 return (address)(offset + InstanceMirrorKlass::offset_of_static_fields() + cast_from_oop<intptr_t>(java_mirror())); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2592 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2593 |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
2594 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2595 const char* InstanceKlass::signature_name() const { |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2596 int hash_len = 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2597 char hash_buf[40]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2598 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2599 // If this is an anonymous class, append a hash to make the name unique |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2600 if (is_anonymous()) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2601 assert(EnableInvokeDynamic, "EnableInvokeDynamic was not set."); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2602 intptr_t hash = (java_mirror() != NULL) ? java_mirror()->identity_hash() : 0; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2603 sprintf(hash_buf, "/" UINTX_FORMAT, (uintx)hash); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2604 hash_len = (int)strlen(hash_buf); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2605 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2606 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2607 // Get the internal name as a c string |
0 | 2608 const char* src = (const char*) (name()->as_C_string()); |
2609 const int src_length = (int)strlen(src); | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2610 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2611 char* dest = NEW_RESOURCE_ARRAY(char, src_length + hash_len + 3); |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2612 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2613 // Add L as type indicator |
0 | 2614 int dest_index = 0; |
2615 dest[dest_index++] = 'L'; | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2616 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2617 // Add the actual class name |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2618 for (int src_index = 0; src_index < src_length; ) { |
0 | 2619 dest[dest_index++] = src[src_index++]; |
2620 } | |
12995
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2621 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2622 // If we have a hash, append it |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2623 for (int hash_index = 0; hash_index < hash_len; ) { |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2624 dest[dest_index++] = hash_buf[hash_index++]; |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2625 } |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2626 |
e64f1fe9756b
8024423: JVMTI: GetLoadedClasses doesn't enumerate anonymous classes
farvidsson
parents:
12946
diff
changeset
|
2627 // Add the semicolon and the NULL |
0 | 2628 dest[dest_index++] = ';'; |
2629 dest[dest_index] = '\0'; | |
2630 return dest; | |
2631 } | |
2632 | |
2633 // different verisons of is_same_class_package | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2634 bool InstanceKlass::is_same_class_package(Klass* class2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2635 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2636 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2637 Symbol* classname1 = class1->name(); |
2638 | |
2639 if (class2->oop_is_objArray()) { | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2640 class2 = ObjArrayKlass::cast(class2)->bottom_klass(); |
0 | 2641 } |
2642 oop classloader2; | |
6983 | 2643 if (class2->oop_is_instance()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2644 classloader2 = InstanceKlass::cast(class2)->class_loader(); |
0 | 2645 } else { |
6983 | 2646 assert(class2->oop_is_typeArray(), "should be type array"); |
0 | 2647 classloader2 = NULL; |
2648 } | |
6983 | 2649 Symbol* classname2 = class2->name(); |
0 | 2650 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2651 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2652 classloader2, classname2); |
2653 } | |
2654 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2655 bool InstanceKlass::is_same_class_package(oop classloader2, Symbol* classname2) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2656 Klass* class1 = this; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2657 oop classloader1 = InstanceKlass::cast(class1)->class_loader(); |
6983 | 2658 Symbol* classname1 = class1->name(); |
0 | 2659 |
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2660 return InstanceKlass::is_same_class_package(classloader1, classname1, |
0 | 2661 classloader2, classname2); |
2662 } | |
2663 | |
2664 // return true if two classes are in the same package, classloader | |
2665 // and classname information is enough to determine a class's package | |
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2666 bool InstanceKlass::is_same_class_package(oop class_loader1, Symbol* class_name1, |
2177
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2667 oop class_loader2, Symbol* class_name2) { |
0 | 2668 if (class_loader1 != class_loader2) { |
2669 return false; | |
665
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2670 } else if (class_name1 == class_name2) { |
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2671 return true; // skip painful bytewise comparison |
0 | 2672 } else { |
2673 ResourceMark rm; | |
2674 | |
2177
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2675 // The Symbol*'s are in UTF8 encoding. Since we only need to check explicitly |
0 | 2676 // for ASCII characters ('/', 'L', '['), we can keep them in UTF8 encoding. |
2677 // Otherwise, we just compare jbyte values between the strings. | |
2177
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2678 const jbyte *name1 = class_name1->base(); |
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|
2679 const jbyte *name2 = class_name2->base(); |
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|
2680 |
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2681 const jbyte *last_slash1 = UTF8::strrchr(name1, class_name1->utf8_length(), '/'); |
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2682 const jbyte *last_slash2 = UTF8::strrchr(name2, class_name2->utf8_length(), '/'); |
0 | 2683 |
2684 if ((last_slash1 == NULL) || (last_slash2 == NULL)) { | |
2685 // One of the two doesn't have a package. Only return true | |
2686 // if the other one also doesn't have a package. | |
2687 return last_slash1 == last_slash2; | |
2688 } else { | |
2689 // Skip over '['s | |
2690 if (*name1 == '[') { | |
2691 do { | |
2692 name1++; | |
2693 } while (*name1 == '['); | |
2694 if (*name1 != 'L') { | |
2695 // Something is terribly wrong. Shouldn't be here. | |
2696 return false; | |
2697 } | |
2698 } | |
2699 if (*name2 == '[') { | |
2700 do { | |
2701 name2++; | |
2702 } while (*name2 == '['); | |
2703 if (*name2 != 'L') { | |
2704 // Something is terribly wrong. Shouldn't be here. | |
2705 return false; | |
2706 } | |
2707 } | |
2708 | |
2709 // Check that package part is identical | |
2710 int length1 = last_slash1 - name1; | |
2711 int length2 = last_slash2 - name2; | |
2712 | |
2713 return UTF8::equal(name1, length1, name2, length2); | |
2714 } | |
2715 } | |
2716 } | |
2717 | |
652
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2718 // Returns true iff super_method can be overridden by a method in targetclassname |
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2719 // See JSL 3rd edition 8.4.6.1 |
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2720 // Assumes name-signature match |
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2721 // "this" is InstanceKlass of super_method which must exist |
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2722 // note that the InstanceKlass of the method in the targetclassname has not always been created yet |
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2723 bool InstanceKlass::is_override(methodHandle super_method, Handle targetclassloader, Symbol* targetclassname, TRAPS) { |
652
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2724 // Private methods can not be overridden |
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|
2725 if (super_method->is_private()) { |
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|
2726 return false; |
4aaa9f5e02a8
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diff
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|
2727 } |
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|
2728 // If super method is accessible, then override |
4aaa9f5e02a8
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|
2729 if ((super_method->is_protected()) || |
4aaa9f5e02a8
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parents:
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diff
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|
2730 (super_method->is_public())) { |
4aaa9f5e02a8
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diff
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|
2731 return true; |
4aaa9f5e02a8
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acorn
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diff
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|
2732 } |
4aaa9f5e02a8
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diff
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|
2733 // Package-private methods are not inherited outside of package |
4aaa9f5e02a8
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|
2734 assert(super_method->is_package_private(), "must be package private"); |
2177
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diff
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|
2735 return(is_same_class_package(targetclassloader(), targetclassname)); |
652
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acorn
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|
2736 } |
0 | 2737 |
665
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|
2738 /* defined for now in jvm.cpp, for historical reasons *-- |
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|
2739 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle self, |
2177
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diff
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|
2740 Symbol*& simple_name_result, TRAPS) { |
665
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diff
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|
2741 ... |
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|
2742 } |
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|
2743 */ |
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|
2744 |
c89f86385056
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diff
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|
2745 // tell if two classes have the same enclosing class (at package level) |
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2746 bool InstanceKlass::is_same_package_member_impl(instanceKlassHandle class1, |
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2747 Klass* class2_oop, TRAPS) { |
da91efe96a93
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2748 if (class2_oop == class1()) return true; |
6983 | 2749 if (!class2_oop->oop_is_instance()) return false; |
665
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|
2750 instanceKlassHandle class2(THREAD, class2_oop); |
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|
2751 |
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|
2752 // must be in same package before we try anything else |
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|
2753 if (!class1->is_same_class_package(class2->class_loader(), class2->name())) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2754 return false; |
c89f86385056
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diff
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|
2755 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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|
2756 // As long as there is an outer1.getEnclosingClass, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
2757 // shift the search outward. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
changeset
|
2758 instanceKlassHandle outer1 = class1; |
c89f86385056
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|
2759 for (;;) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2760 // As we walk along, look for equalities between outer1 and class2. |
c89f86385056
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diff
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|
2761 // Eventually, the walks will terminate as outer1 stops |
c89f86385056
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diff
changeset
|
2762 // at the top-level class around the original class. |
1126
933a3e806ce6
6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
parents:
1039
diff
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|
2763 bool ignore_inner_is_member; |
6725
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2764 Klass* next = outer1->compute_enclosing_class(&ignore_inner_is_member, |
1126
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
xlu
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1039
diff
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|
2765 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2766 if (next == NULL) break; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2767 if (next == class2()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2768 outer1 = instanceKlassHandle(THREAD, next); |
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|
2769 } |
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diff
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|
2770 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2771 // Now do the same for class2. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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diff
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|
2772 instanceKlassHandle outer2 = class2; |
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diff
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|
2773 for (;;) { |
1126
933a3e806ce6
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xlu
parents:
1039
diff
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|
2774 bool ignore_inner_is_member; |
6725
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|
2775 Klass* next = outer2->compute_enclosing_class(&ignore_inner_is_member, |
1126
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xlu
parents:
1039
diff
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|
2776 CHECK_false); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
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605
diff
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|
2777 if (next == NULL) break; |
c89f86385056
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jrose
parents:
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diff
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|
2778 // Might as well check the new outer against all available values. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2779 if (next == class1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2780 if (next == outer1()) return true; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
changeset
|
2781 outer2 = instanceKlassHandle(THREAD, next); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2782 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2783 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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605
diff
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|
2784 // If by this point we have not found an equality between the |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
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|
2785 // two classes, we know they are in separate package members. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2786 return false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
2787 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
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diff
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|
2788 |
0 | 2789 |
6725
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|
2790 jint InstanceKlass::compute_modifier_flags(TRAPS) const { |
0 | 2791 jint access = access_flags().as_int(); |
2792 | |
2793 // But check if it happens to be member class. | |
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|
2794 instanceKlassHandle ik(THREAD, this); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2795 InnerClassesIterator iter(ik); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2796 for (; !iter.done(); iter.next()) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2797 int ioff = iter.inner_class_info_index(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2798 // Inner class attribute can be zero, skip it. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2799 // Strange but true: JVM spec. allows null inner class refs. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2800 if (ioff == 0) continue; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
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|
2801 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2802 // only look at classes that are already loaded |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
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|
2803 // since we are looking for the flags for our self. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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|
2804 Symbol* inner_name = ik->constants()->klass_name_at(ioff); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4739
diff
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|
2805 if ((ik->name() == inner_name)) { |
f7c4174b33ba
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jiangli
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4739
diff
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|
2806 // This is really a member class. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4739
diff
changeset
|
2807 access = iter.inner_access_flags(); |
f7c4174b33ba
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jiangli
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4739
diff
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|
2808 break; |
0 | 2809 } |
2810 } | |
2811 // Remember to strip ACC_SUPER bit | |
2812 return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS; | |
2813 } | |
2814 | |
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|
2815 jint InstanceKlass::jvmti_class_status() const { |
0 | 2816 jint result = 0; |
2817 | |
2818 if (is_linked()) { | |
2819 result |= JVMTI_CLASS_STATUS_VERIFIED | JVMTI_CLASS_STATUS_PREPARED; | |
2820 } | |
2821 | |
2822 if (is_initialized()) { | |
2823 assert(is_linked(), "Class status is not consistent"); | |
2824 result |= JVMTI_CLASS_STATUS_INITIALIZED; | |
2825 } | |
2826 if (is_in_error_state()) { | |
2827 result |= JVMTI_CLASS_STATUS_ERROR; | |
2828 } | |
2829 return result; | |
2830 } | |
2831 | |
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|
2832 Method* InstanceKlass::method_at_itable(Klass* holder, int index, TRAPS) { |
0 | 2833 itableOffsetEntry* ioe = (itableOffsetEntry*)start_of_itable(); |
2834 int method_table_offset_in_words = ioe->offset()/wordSize; | |
2835 int nof_interfaces = (method_table_offset_in_words - itable_offset_in_words()) | |
2836 / itableOffsetEntry::size(); | |
2837 | |
2838 for (int cnt = 0 ; ; cnt ++, ioe ++) { | |
605 | 2839 // If the interface isn't implemented by the receiver class, |
0 | 2840 // the VM should throw IncompatibleClassChangeError. |
2841 if (cnt >= nof_interfaces) { | |
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|
2842 THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError()); |
0 | 2843 } |
2844 | |
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|
2845 Klass* ik = ioe->interface_klass(); |
0 | 2846 if (ik == holder) break; |
2847 } | |
2848 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
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|
2849 itableMethodEntry* ime = ioe->first_method_entry(this); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2850 Method* m = ime[index].method(); |
0 | 2851 if (m == NULL) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2852 THROW_NULL(vmSymbols::java_lang_AbstractMethodError()); |
0 | 2853 } |
2854 return m; | |
2855 } | |
2856 | |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
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12811
diff
changeset
|
2857 |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2858 #if INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2859 // update default_methods for redefineclasses for methods that are |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2860 // not yet in the vtable due to concurrent subclass define and superinterface |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2861 // redefinition |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2862 // Note: those in the vtable, should have been updated via adjust_method_entries |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
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20788
diff
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|
2863 void InstanceKlass::adjust_default_methods(InstanceKlass* holder, bool* trace_name_printed) { |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2864 // search the default_methods for uses of either obsolete or EMCP methods |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2865 if (default_methods() != NULL) { |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2866 for (int index = 0; index < default_methods()->length(); index ++) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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diff
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|
2867 Method* old_method = default_methods()->at(index); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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20788
diff
changeset
|
2868 if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
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diff
changeset
|
2869 continue; // skip uninteresting entries |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
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20788
diff
changeset
|
2870 } |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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parents:
20788
diff
changeset
|
2871 assert(!old_method->is_deleted(), "default methods may not be deleted"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
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changeset
|
2872 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
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parents:
20788
diff
changeset
|
2873 Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum()); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2874 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2875 assert(new_method != NULL, "method_with_idnum() should not be NULL"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2876 assert(old_method != new_method, "sanity check"); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2877 |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2878 default_methods()->at_put(index, new_method); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2879 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2880 if (!(*trace_name_printed)) { |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2881 // RC_TRACE_MESG macro has an embedded ResourceMark |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2882 RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2883 external_name(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2884 old_method->method_holder()->external_name())); |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2885 *trace_name_printed = true; |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
2886 } |
22886
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2887 RC_TRACE(0x00100000, ("default method update: %s(%s) ", |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2888 new_method->name()->as_C_string(), |
fdde6a70ea85
8046246: the constantPoolCacheOopDesc::adjust_method_entries() used in RedefineClasses does not scale
sspitsyn
parents:
20788
diff
changeset
|
2889 new_method->signature()->as_C_string())); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2890 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2891 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2892 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2893 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2894 #endif // INCLUDE_JVMTI |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
2895 |
0 | 2896 // On-stack replacement stuff |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2897 void InstanceKlass::add_osr_nmethod(nmethod* n) { |
0 | 2898 // only one compilation can be active |
2899 NEEDS_CLEANUP | |
2900 // This is a short non-blocking critical region, so the no safepoint check is ok. | |
2901 OsrList_lock->lock_without_safepoint_check(); | |
2902 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2903 n->set_osr_link(osr_nmethods_head()); |
0 | 2904 set_osr_nmethods_head(n); |
1783 | 2905 // Raise the highest osr level if necessary |
2906 if (TieredCompilation) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2907 Method* m = n->method(); |
1783 | 2908 m->set_highest_osr_comp_level(MAX2(m->highest_osr_comp_level(), n->comp_level())); |
2909 } | |
0 | 2910 // Remember to unlock again |
2911 OsrList_lock->unlock(); | |
1783 | 2912 |
2913 // Get rid of the osr methods for the same bci that have lower levels. | |
2914 if (TieredCompilation) { | |
2915 for (int l = CompLevel_limited_profile; l < n->comp_level(); l++) { | |
2916 nmethod *inv = lookup_osr_nmethod(n->method(), n->osr_entry_bci(), l, true); | |
2917 if (inv != NULL && inv->is_in_use()) { | |
2918 inv->make_not_entrant(); | |
2919 } | |
2920 } | |
2921 } | |
0 | 2922 } |
2923 | |
2924 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2925 void InstanceKlass::remove_osr_nmethod(nmethod* n) { |
0 | 2926 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2927 OsrList_lock->lock_without_safepoint_check(); | |
2928 assert(n->is_osr_method(), "wrong kind of nmethod"); | |
2929 nmethod* last = NULL; | |
2930 nmethod* cur = osr_nmethods_head(); | |
1783 | 2931 int max_level = CompLevel_none; // Find the max comp level excluding n |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2932 Method* m = n->method(); |
0 | 2933 // Search for match |
2934 while(cur != NULL && cur != n) { | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2935 if (TieredCompilation && m == cur->method()) { |
1783 | 2936 // Find max level before n |
2937 max_level = MAX2(max_level, cur->comp_level()); | |
2938 } | |
0 | 2939 last = cur; |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2940 cur = cur->osr_link(); |
0 | 2941 } |
1783 | 2942 nmethod* next = NULL; |
0 | 2943 if (cur == n) { |
1783 | 2944 next = cur->osr_link(); |
0 | 2945 if (last == NULL) { |
2946 // Remove first element | |
1783 | 2947 set_osr_nmethods_head(next); |
0 | 2948 } else { |
1783 | 2949 last->set_osr_link(next); |
0 | 2950 } |
2951 } | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
2952 n->set_osr_link(NULL); |
1783 | 2953 if (TieredCompilation) { |
2954 cur = next; | |
2955 while (cur != NULL) { | |
2956 // Find max level after n | |
17975
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2957 if (m == cur->method()) { |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2958 max_level = MAX2(max_level, cur->comp_level()); |
bd4d69d9cb7d
8034188: OSR methods may not be recompiled at proper compilation level
neliasso
parents:
17937
diff
changeset
|
2959 } |
1783 | 2960 cur = cur->osr_link(); |
2961 } | |
2962 m->set_highest_osr_comp_level(max_level); | |
2963 } | |
0 | 2964 // Remember to unlock again |
2965 OsrList_lock->unlock(); | |
2966 } | |
2967 | |
20611
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2968 int InstanceKlass::mark_osr_nmethods(const Method* m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2969 // This is a short non-blocking critical region, so the no safepoint check is ok. |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2970 MutexLockerEx ml(OsrList_lock, Mutex::_no_safepoint_check_flag); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2971 nmethod* osr = osr_nmethods_head(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2972 int found = 0; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2973 while (osr != NULL) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2974 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2975 if (osr->method() == m) { |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2976 osr->mark_for_deoptimization(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2977 found++; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2978 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2979 osr = osr->osr_link(); |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2980 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2981 return found; |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2982 } |
3c87c13918fb
8061817: Whitebox.deoptimizeMethod() does not deoptimize all OSR versions of method
thartmann
parents:
20576
diff
changeset
|
2983 |
10265
92ef81e2f571
8003557: NPG: Klass* const k should be const Klass* k.
minqi
parents:
10152
diff
changeset
|
2984 nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_level, bool match_level) const { |
0 | 2985 // This is a short non-blocking critical region, so the no safepoint check is ok. |
2986 OsrList_lock->lock_without_safepoint_check(); | |
2987 nmethod* osr = osr_nmethods_head(); | |
1783 | 2988 nmethod* best = NULL; |
0 | 2989 while (osr != NULL) { |
2990 assert(osr->is_osr_method(), "wrong kind of nmethod found in chain"); | |
1783 | 2991 // There can be a time when a c1 osr method exists but we are waiting |
2992 // for a c2 version. When c2 completes its osr nmethod we will trash | |
2993 // the c1 version and only be able to find the c2 version. However | |
2994 // while we overflow in the c1 code at back branches we don't want to | |
2995 // try and switch to the same code as we are already running | |
2996 | |
0 | 2997 if (osr->method() == m && |
2998 (bci == InvocationEntryBci || osr->osr_entry_bci() == bci)) { | |
1783 | 2999 if (match_level) { |
3000 if (osr->comp_level() == comp_level) { | |
3001 // Found a match - return it. | |
3002 OsrList_lock->unlock(); | |
3003 return osr; | |
3004 } | |
3005 } else { | |
3006 if (best == NULL || (osr->comp_level() > best->comp_level())) { | |
3007 if (osr->comp_level() == CompLevel_highest_tier) { | |
3008 // Found the best possible - return it. | |
3009 OsrList_lock->unlock(); | |
3010 return osr; | |
3011 } | |
3012 best = osr; | |
3013 } | |
3014 } | |
0 | 3015 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
876
diff
changeset
|
3016 osr = osr->osr_link(); |
0 | 3017 } |
3018 OsrList_lock->unlock(); | |
1783 | 3019 if (best != NULL && best->comp_level() >= comp_level && match_level == false) { |
3020 return best; | |
3021 } | |
0 | 3022 return NULL; |
3023 } | |
3024 | |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3025 bool InstanceKlass::add_member_name(Handle mem_name) { |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3026 jweak mem_name_wref = JNIHandles::make_weak_global(mem_name); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3027 MutexLocker ml(MemberNameTable_lock); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3028 DEBUG_ONLY(No_Safepoint_Verifier nsv); |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3029 |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3030 // Check if method has been redefined while taking out MemberNameTable_lock, if so |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3031 // return false. We cannot cache obsolete methods. They will crash when the function |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3032 // is called! |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3033 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mem_name()); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3034 if (method->is_obsolete()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3035 return false; |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3036 } else if (method->is_old()) { |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3037 // Replace method with redefined version |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3038 java_lang_invoke_MemberName::set_vmtarget(mem_name(), method_with_idnum(method->method_idnum())); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3039 } |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3040 |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3041 if (_member_names == NULL) { |
10345
b7fa10a3a69a
8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes
sspitsyn
parents:
10343
diff
changeset
|
3042 _member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count()); |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3043 } |
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3044 _member_names->add_member_name(mem_name_wref); |
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20611
diff
changeset
|
3045 return true; |
10133
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3046 } |
6337ca4dcad8
8008511: JSR 292: MemberName vmtarget refs to methods must be updated at class redefinition
sspitsyn
parents:
9062
diff
changeset
|
3047 |
0 | 3048 // ----------------------------------------------------------------------------------------------------- |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3049 // Printing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3050 |
0 | 3051 #ifndef PRODUCT |
3052 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3053 #define BULLET " - " |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3054 |
6725
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|
3055 static const char* state_names[] = { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3056 "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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|
3057 }; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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changeset
|
3058 |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3059 static void print_vtable(intptr_t* start, int len, outputStream* st) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3060 for (int i = 0; i < len; i++) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3061 intptr_t e = start[i]; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3062 st->print("%d : " INTPTR_FORMAT, i, e); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3063 if (e != 0 && ((Metadata*)e)->is_metaspace_object()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3064 st->print(" "); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3065 ((Metadata*)e)->print_value_on(st); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3066 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3067 st->cr(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3068 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3069 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3070 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3071 void InstanceKlass::print_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
3072 assert(is_klass(), "must be klass"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3073 Klass::print_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3074 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3075 st->print(BULLET"instance size: %d", size_helper()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
3076 st->print(BULLET"klass size: %d", size()); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
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changeset
|
3077 st->print(BULLET"access: "); access_flags().print_on(st); st->cr(); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
3078 st->print(BULLET"state: "); st->print_cr("%s", state_names[_init_state]); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3079 st->print(BULLET"name: "); name()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
3080 st->print(BULLET"super: "); super()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3081 st->print(BULLET"sub: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3082 Klass* sub = subklass(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3083 int n; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3084 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3085 if (n < MaxSubklassPrintSize) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3086 sub->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3087 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3088 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3089 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3090 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3091 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3092 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3093 if (is_interface()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3094 st->print_cr(BULLET"nof implementors: %d", nof_implementors()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3095 if (nof_implementors() == 1) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3096 st->print_cr(BULLET"implementor: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3097 st->print(" "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3098 implementor()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3099 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3100 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3101 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3102 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3103 st->print(BULLET"arrays: "); array_klasses()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3104 st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3105 if (Verbose || WizardMode) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3106 Array<Method*>* method_array = methods(); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3107 for (int i = 0; i < method_array->length(); i++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3108 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3109 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3110 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3111 st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3112 st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3113 if (Verbose && default_methods() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3114 Array<Method*>* method_array = default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3115 for (int i = 0; i < method_array->length(); i++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3116 st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3117 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3118 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3119 if (default_vtable_indices() != NULL) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3120 st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3121 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3122 st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3123 st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3124 st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3125 if (class_loader_data() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3126 st->print(BULLET"class loader data: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3127 class_loader_data()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3128 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3129 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3130 st->print(BULLET"host class: "); host_klass()->print_value_on_maybe_null(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3131 if (source_file_name() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3132 st->print(BULLET"source file: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3133 source_file_name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3134 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3135 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3136 if (source_debug_extension() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3137 st->print(BULLET"source debug extension: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3138 st->print("%s", source_debug_extension()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3139 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3140 } |
8031 | 3141 st->print(BULLET"class annotations: "); class_annotations()->print_value_on(st); st->cr(); |
3142 st->print(BULLET"class type annotations: "); class_type_annotations()->print_value_on(st); st->cr(); | |
3143 st->print(BULLET"field annotations: "); fields_annotations()->print_value_on(st); st->cr(); | |
3144 st->print(BULLET"field type annotations: "); fields_type_annotations()->print_value_on(st); st->cr(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3145 { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3146 bool have_pv = false; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3147 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3148 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3149 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3150 if (!have_pv) |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3151 st->print(BULLET"previous version: "); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3152 have_pv = true; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3153 pv_node->prev_constant_pool()->print_value_on(st); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3154 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3155 if (have_pv) st->cr(); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3156 } // pvw is cleaned up |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3157 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3158 if (generic_signature() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3159 st->print(BULLET"generic signature: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3160 generic_signature()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3161 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3162 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3163 st->print(BULLET"inner classes: "); inner_classes()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3164 st->print(BULLET"java mirror: "); java_mirror()->print_value_on(st); st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3165 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", vtable_length(), start_of_vtable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3166 if (vtable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_vtable(), vtable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3167 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", itable_length(), start_of_itable()); st->cr(); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3168 if (itable_length() > 0 && (Verbose || WizardMode)) print_vtable(start_of_itable(), itable_length(), st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3169 st->print_cr(BULLET"---- static fields (%d words):", static_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3170 FieldPrinter print_static_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3171 ((InstanceKlass*)this)->do_local_static_fields(&print_static_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3172 st->print_cr(BULLET"---- non-static fields (%d words):", nonstatic_field_size()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3173 FieldPrinter print_nonstatic_field(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3174 ((InstanceKlass*)this)->do_nonstatic_fields(&print_nonstatic_field); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3175 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3176 st->print(BULLET"non-static oop maps: "); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3177 OopMapBlock* map = start_of_nonstatic_oop_maps(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3178 OopMapBlock* end_map = map + nonstatic_oop_map_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3179 while (map < end_map) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3180 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3181 map++; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3182 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3183 st->cr(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3184 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3185 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3186 #endif //PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3187 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3188 void InstanceKlass::print_value_on(outputStream* st) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3189 assert(is_klass(), "must be klass"); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12067
diff
changeset
|
3190 if (Verbose || WizardMode) access_flags().print_on(st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3191 name()->print_value_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3192 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3193 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3194 #ifndef PRODUCT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3195 |
0 | 3196 void FieldPrinter::do_field(fieldDescriptor* fd) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3197 _st->print(BULLET); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3198 if (_obj == NULL) { |
0 | 3199 fd->print_on(_st); |
3200 _st->cr(); | |
3201 } else { | |
3202 fd->print_on_for(_st, _obj); | |
3203 _st->cr(); | |
3204 } | |
3205 } | |
3206 | |
3207 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3208 void InstanceKlass::oop_print_on(oop obj, outputStream* st) { |
0 | 3209 Klass::oop_print_on(obj, st); |
3210 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3211 if (this == SystemDictionary::String_klass()) { |
0 | 3212 typeArrayOop value = java_lang_String::value(obj); |
3213 juint offset = java_lang_String::offset(obj); | |
13715
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3214 if (value != NULL) { |
0 | 3215 juint length = java_lang_String::length(obj); |
13715
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3216 if (value->is_typeArray() && |
0 | 3217 offset <= (juint) value->length() && |
3218 offset + length <= (juint) value->length()) { | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3219 st->print(BULLET"string: "); |
20261
27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
stefank
parents:
20197
diff
changeset
|
3220 java_lang_String::print(obj, st); |
0 | 3221 st->cr(); |
3222 if (!WizardMode) return; // that is enough | |
3223 } | |
3224 } | |
13715
b270b954ba9a
Avoid segfault in InstanceKlass::oop_print_on's String special case when the value array is null.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13451
diff
changeset
|
3225 } |
0 | 3226 |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3227 st->print_cr(BULLET"---- fields (total size %d words):", oop_size(obj)); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3228 FieldPrinter print_field(st, obj); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3229 do_nonstatic_fields(&print_field); |
0 | 3230 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3231 if (this == SystemDictionary::Class_klass()) { |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3232 st->print(BULLET"signature: "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3233 java_lang_Class::print_signature(obj, st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3234 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3235 Klass* mirrored_klass = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3236 st->print(BULLET"fake entry for mirror: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3237 mirrored_klass->print_value_on_maybe_null(st); |
0 | 3238 st->cr(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3239 Klass* array_klass = java_lang_Class::array_klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3240 st->print(BULLET"fake entry for array: "); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3241 array_klass->print_value_on_maybe_null(st); |
0 | 3242 st->cr(); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3243 st->print_cr(BULLET"fake entry for oop_size: %d", java_lang_Class::oop_size(obj)); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3244 st->print_cr(BULLET"fake entry for static_oop_field_count: %d", java_lang_Class::static_oop_field_count(obj)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3245 Klass* real_klass = java_lang_Class::as_Klass(obj); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3246 if (real_klass != NULL && real_klass->oop_is_instance()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3247 InstanceKlass::cast(real_klass)->do_local_static_fields(&print_field); |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3248 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3249 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3250 st->print(BULLET"signature: "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3251 java_lang_invoke_MethodType::print_signature(obj, st); |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3252 st->cr(); |
0 | 3253 } |
3254 } | |
3255 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3256 #endif //PRODUCT |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1144
diff
changeset
|
3257 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3258 void InstanceKlass::oop_print_value_on(oop obj, outputStream* st) { |
0 | 3259 st->print("a "); |
3260 name()->print_value_on(st); | |
3261 obj->print_address_on(st); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3262 if (this == SystemDictionary::String_klass() |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3263 && java_lang_String::value(obj) != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3264 ResourceMark rm; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3265 int len = java_lang_String::length(obj); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3266 int plen = (len < 24 ? len : 12); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3267 char* str = java_lang_String::as_utf8_string(obj, 0, plen); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3268 st->print(" = \"%s\"", str); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3269 if (len > plen) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3270 st->print("...[%d]", len); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3271 } else if (this == SystemDictionary::Class_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3272 Klass* k = java_lang_Class::as_Klass(obj); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3273 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3274 if (k != NULL) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3275 k->print_value_on(st); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3276 } else { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3277 const char* tname = type2name(java_lang_Class::primitive_type(obj)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3278 st->print("%s", tname ? tname : "type?"); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3279 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3280 } else if (this == SystemDictionary::MethodType_klass()) { |
1039
987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
jrose
parents:
997
diff
changeset
|
3281 st->print(" = "); |
2357
8033953d67ff
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
2334
diff
changeset
|
3282 java_lang_invoke_MethodType::print_signature(obj, st); |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3283 } else if (java_lang_boxing_object::is_instance(obj)) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3284 st->print(" = "); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3285 java_lang_boxing_object::print(obj, st); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3286 } else if (this == SystemDictionary::LambdaForm_klass()) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3287 oop vmentry = java_lang_invoke_LambdaForm::vmentry(obj); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3288 if (vmentry != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3289 st->print(" => "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3290 vmentry->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3291 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3292 } else if (this == SystemDictionary::MemberName_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3293 Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(obj); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3294 if (vmtarget != NULL) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3295 st->print(" = "); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3296 vmtarget->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3297 } else { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3298 java_lang_invoke_MemberName::clazz(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3299 st->print("."); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3300 java_lang_invoke_MemberName::name(obj)->print_value_on(st); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6203
diff
changeset
|
3301 } |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
605
diff
changeset
|
3302 } |
0 | 3303 } |
3304 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3305 const char* InstanceKlass::internal_name() const { |
0 | 3306 return external_name(); |
3307 } | |
3308 | |
7956 | 3309 #if INCLUDE_SERVICES |
3310 // Size Statistics | |
3311 void InstanceKlass::collect_statistics(KlassSizeStats *sz) const { | |
3312 Klass::collect_statistics(sz); | |
3313 | |
3314 sz->_inst_size = HeapWordSize * size_helper(); | |
3315 sz->_vtab_bytes = HeapWordSize * align_object_offset(vtable_length()); | |
3316 sz->_itab_bytes = HeapWordSize * align_object_offset(itable_length()); | |
3317 sz->_nonstatic_oopmap_bytes = HeapWordSize * | |
3318 ((is_interface() || is_anonymous()) ? | |
3319 align_object_offset(nonstatic_oop_map_size()) : | |
3320 nonstatic_oop_map_size()); | |
3321 | |
3322 int n = 0; | |
3323 n += (sz->_methods_array_bytes = sz->count_array(methods())); | |
3324 n += (sz->_method_ordering_bytes = sz->count_array(method_ordering())); | |
3325 n += (sz->_local_interfaces_bytes = sz->count_array(local_interfaces())); | |
3326 n += (sz->_transitive_interfaces_bytes = sz->count_array(transitive_interfaces())); | |
3327 n += (sz->_fields_bytes = sz->count_array(fields())); | |
3328 n += (sz->_inner_classes_bytes = sz->count_array(inner_classes())); | |
3329 sz->_ro_bytes += n; | |
3330 | |
3331 const ConstantPool* cp = constants(); | |
3332 if (cp) { | |
3333 cp->collect_statistics(sz); | |
3334 } | |
3335 | |
3336 const Annotations* anno = annotations(); | |
3337 if (anno) { | |
3338 anno->collect_statistics(sz); | |
3339 } | |
3340 | |
3341 const Array<Method*>* methods_array = methods(); | |
3342 if (methods()) { | |
3343 for (int i = 0; i < methods_array->length(); i++) { | |
3344 Method* method = methods_array->at(i); | |
3345 if (method) { | |
3346 sz->_method_count ++; | |
3347 method->collect_statistics(sz); | |
3348 } | |
3349 } | |
3350 } | |
3351 } | |
3352 #endif // INCLUDE_SERVICES | |
3353 | |
0 | 3354 // Verification |
3355 | |
3356 class VerifyFieldClosure: public OopClosure { | |
113
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3357 protected: |
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3358 template <class T> void do_oop_work(T* p) { |
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3359 oop obj = oopDesc::load_decode_heap_oop(p); |
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3360 if (!obj->is_oop_or_null()) { |
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|
3361 tty->print_cr("Failed: " PTR_FORMAT " -> " PTR_FORMAT, p, (address)obj); |
0 | 3362 Universe::print(); |
3363 guarantee(false, "boom"); | |
3364 } | |
3365 } | |
113
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3366 public: |
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|
3367 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); } |
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3368 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); } |
0 | 3369 }; |
3370 | |
14378
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|
3371 void InstanceKlass::verify_on(outputStream* st) { |
6725
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3372 #ifndef PRODUCT |
11034 | 3373 // Avoid redundant verifies, this really should be in product. |
6725
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3374 if (_verify_count == Universe::verify_count()) return; |
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3375 _verify_count = Universe::verify_count(); |
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3376 #endif |
11034 | 3377 |
3378 // Verify Klass | |
14378
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|
3379 Klass::verify_on(st); |
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|
3380 |
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|
3381 // Verify that klass is present in ClassLoaderData |
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3382 guarantee(class_loader_data()->contains_klass(this), |
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|
3383 "this class isn't found in class loader data"); |
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3384 |
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3385 // Verify vtables |
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|
3386 if (is_linked()) { |
11034 | 3387 ResourceMark rm; |
6725
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3388 // $$$ This used to be done only for m/s collections. Doing it |
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3389 // always seemed a valid generalization. (DLD -- 6/00) |
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3390 vtable()->verify(st); |
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|
3391 } |
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|
3392 |
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3393 // Verify first subklass |
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|
3394 if (subklass_oop() != NULL) { |
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3395 guarantee(subklass_oop()->is_klass(), "should be klass"); |
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3396 } |
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|
3397 |
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|
3398 // Verify siblings |
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3399 Klass* super = this->super(); |
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3400 Klass* sib = next_sibling(); |
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|
3401 if (sib != NULL) { |
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|
3402 if (sib == this) { |
da91efe96a93
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|
3403 fatal(err_msg("subclass points to itself " PTR_FORMAT, sib)); |
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|
3404 } |
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|
3405 |
da91efe96a93
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|
3406 guarantee(sib->is_klass(), "should be klass"); |
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|
3407 guarantee(sib->super() == super, "siblings should have same superklass"); |
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|
3408 } |
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|
3409 |
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|
3410 // Verify implementor fields |
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|
3411 Klass* im = implementor(); |
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6964458: Reimplement class meta-data storage to use native memory
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|
3412 if (im != NULL) { |
da91efe96a93
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|
3413 guarantee(is_interface(), "only interfaces should have implementor set"); |
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|
3414 guarantee(im->is_klass(), "should be klass"); |
6983 | 3415 guarantee(!im->is_interface() || im == this, |
6725
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|
3416 "implementors cannot be interfaces"); |
da91efe96a93
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|
3417 } |
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|
3418 |
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3419 // Verify local interfaces |
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|
3420 if (local_interfaces()) { |
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|
3421 Array<Klass*>* local_interfaces = this->local_interfaces(); |
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3422 for (int j = 0; j < local_interfaces->length(); j++) { |
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|
3423 Klass* e = local_interfaces->at(j); |
6983 | 3424 guarantee(e->is_klass() && e->is_interface(), "invalid local interface"); |
6725
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|
3425 } |
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|
3426 } |
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|
3427 |
da91efe96a93
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|
3428 // Verify transitive interfaces |
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|
3429 if (transitive_interfaces() != NULL) { |
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|
3430 Array<Klass*>* transitive_interfaces = this->transitive_interfaces(); |
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|
3431 for (int j = 0; j < transitive_interfaces->length(); j++) { |
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|
3432 Klass* e = transitive_interfaces->at(j); |
6983 | 3433 guarantee(e->is_klass() && e->is_interface(), "invalid transitive interface"); |
6725
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|
3434 } |
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|
3435 } |
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|
3436 |
da91efe96a93
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|
3437 // Verify methods |
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|
3438 if (methods() != NULL) { |
da91efe96a93
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|
3439 Array<Method*>* methods = this->methods(); |
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|
3440 for (int j = 0; j < methods->length(); j++) { |
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|
3441 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
da91efe96a93
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|
3442 } |
da91efe96a93
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|
3443 for (int j = 0; j < methods->length() - 1; j++) { |
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|
3444 Method* m1 = methods->at(j); |
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|
3445 Method* m2 = methods->at(j + 1); |
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|
3446 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
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|
3447 } |
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|
3448 } |
da91efe96a93
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|
3449 |
da91efe96a93
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|
3450 // Verify method ordering |
da91efe96a93
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|
3451 if (method_ordering() != NULL) { |
da91efe96a93
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|
3452 Array<int>* method_ordering = this->method_ordering(); |
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|
3453 int length = method_ordering->length(); |
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|
3454 if (JvmtiExport::can_maintain_original_method_order() || |
9057
8554c55669b0
8010943: guarantee(length == 0) failed: invalid method ordering length
hseigel
parents:
8719
diff
changeset
|
3455 ((UseSharedSpaces || DumpSharedSpaces) && length != 0)) { |
6725
da91efe96a93
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|
3456 guarantee(length == methods()->length(), "invalid method ordering length"); |
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|
3457 jlong sum = 0; |
da91efe96a93
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|
3458 for (int j = 0; j < length; j++) { |
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|
3459 int original_index = method_ordering->at(j); |
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|
3460 guarantee(original_index >= 0, "invalid method ordering index"); |
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|
3461 guarantee(original_index < length, "invalid method ordering index"); |
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|
3462 sum += original_index; |
da91efe96a93
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|
3463 } |
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|
3464 // Verify sum of indices 0,1,...,length-1 |
da91efe96a93
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|
3465 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum"); |
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|
3466 } else { |
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|
3467 guarantee(length == 0, "invalid method ordering length"); |
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|
3468 } |
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|
3469 } |
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|
3470 |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3471 // Verify default methods |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3472 if (default_methods() != NULL) { |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3473 Array<Method*>* methods = this->default_methods(); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3474 for (int j = 0; j < methods->length(); j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3475 guarantee(methods->at(j)->is_method(), "non-method in methods array"); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3476 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3477 for (int j = 0; j < methods->length() - 1; j++) { |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3478 Method* m1 = methods->at(j); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3479 Method* m2 = methods->at(j + 1); |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3480 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
changeset
|
3481 } |
ac9cb1d5a202
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acorn
parents:
12811
diff
changeset
|
3482 } |
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12811
diff
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|
3483 |
6725
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|
3484 // Verify JNI static field identifiers |
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|
3485 if (jni_ids() != NULL) { |
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|
3486 jni_ids()->verify(this); |
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|
3487 } |
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|
3488 |
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|
3489 // Verify other fields |
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|
3490 if (array_klasses() != NULL) { |
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|
3491 guarantee(array_klasses()->is_klass(), "should be klass"); |
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|
3492 } |
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|
3493 if (constants() != NULL) { |
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|
3494 guarantee(constants()->is_constantPool(), "should be constant pool"); |
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|
3495 } |
8693
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
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parents:
8031
diff
changeset
|
3496 const Klass* host = host_klass(); |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
8031
diff
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|
3497 if (host != NULL) { |
872b3feace55
8008750: [partfait] Null pointer deference in hotspot/src/share/vm/oops/instanceKlass.hpp
morris
parents:
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diff
changeset
|
3498 guarantee(host->is_klass(), "should be klass"); |
6725
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|
3499 } |
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|
3500 } |
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|
3501 |
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|
3502 void InstanceKlass::oop_verify_on(oop obj, outputStream* st) { |
0 | 3503 Klass::oop_verify_on(obj, st); |
3504 VerifyFieldClosure blk; | |
6725
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|
3505 obj->oop_iterate_no_header(&blk); |
0 | 3506 } |
3507 | |
6725
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|
3508 |
113
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diff
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|
3509 // JNIid class for jfieldIDs only |
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diff
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|
3510 // Note to reviewers: |
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diff
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|
3511 // These JNI functions are just moved over to column 1 and not changed |
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diff
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|
3512 // in the compressed oops workspace. |
6725
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|
3513 JNIid::JNIid(Klass* holder, int offset, JNIid* next) { |
113
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|
3514 _holder = holder; |
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diff
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|
3515 _offset = offset; |
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diff
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|
3516 _next = next; |
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diff
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|
3517 debug_only(_is_static_field_id = false;) |
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diff
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|
3518 } |
0 | 3519 |
3520 | |
113
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diff
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|
3521 JNIid* JNIid::find(int offset) { |
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diff
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|
3522 JNIid* current = this; |
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diff
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|
3523 while (current != NULL) { |
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diff
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|
3524 if (current->offset() == offset) return current; |
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52
diff
changeset
|
3525 current = current->next(); |
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52
diff
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|
3526 } |
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parents:
52
diff
changeset
|
3527 return NULL; |
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coleenp
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52
diff
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|
3528 } |
0 | 3529 |
3530 void JNIid::deallocate(JNIid* current) { | |
113
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52
diff
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|
3531 while (current != NULL) { |
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52
diff
changeset
|
3532 JNIid* next = current->next(); |
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52
diff
changeset
|
3533 delete current; |
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52
diff
changeset
|
3534 current = next; |
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52
diff
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|
3535 } |
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52
diff
changeset
|
3536 } |
0 | 3537 |
3538 | |
6725
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|
3539 void JNIid::verify(Klass* holder) { |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6733
diff
changeset
|
3540 int first_field_offset = InstanceMirrorKlass::offset_of_static_fields(); |
113
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diff
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|
3541 int end_field_offset; |
6725
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|
3542 end_field_offset = first_field_offset + (InstanceKlass::cast(holder)->static_field_size() * wordSize); |
0 | 3543 |
113
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diff
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|
3544 JNIid* current = this; |
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diff
changeset
|
3545 while (current != NULL) { |
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52
diff
changeset
|
3546 guarantee(current->holder() == holder, "Invalid klass in JNIid"); |
ba764ed4b6f2
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coleenp
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52
diff
changeset
|
3547 #ifdef ASSERT |
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parents:
52
diff
changeset
|
3548 int o = current->offset(); |
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52
diff
changeset
|
3549 if (current->is_static_field_id()) { |
ba764ed4b6f2
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parents:
52
diff
changeset
|
3550 guarantee(o >= first_field_offset && o < end_field_offset, "Invalid static field offset in JNIid"); |
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52
diff
changeset
|
3551 } |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3552 #endif |
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parents:
52
diff
changeset
|
3553 current = current->next(); |
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52
diff
changeset
|
3554 } |
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52
diff
changeset
|
3555 } |
0 | 3556 |
3557 | |
3558 #ifdef ASSERT | |
6725
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|
3559 void InstanceKlass::set_init_state(ClassState state) { |
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|
3560 bool good_state = is_shared() ? (_init_state <= state) |
113
ba764ed4b6f2
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diff
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|
3561 : (_init_state < state); |
ba764ed4b6f2
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52
diff
changeset
|
3562 assert(good_state || state == allocated, "illegal state transition"); |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
parents:
4006
diff
changeset
|
3563 _init_state = (u1)state; |
113
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|
3564 } |
0 | 3565 #endif |
3566 | |
3567 | |
3568 // RedefineClasses() support for previous versions: | |
3569 | |
6725
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|
3570 // Purge previous versions |
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diff
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|
3571 static void purge_previous_versions_internal(InstanceKlass* ik, int emcp_method_count) { |
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|
3572 if (ik->previous_versions() != NULL) { |
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|
3573 // This klass has previous versions so see what we can cleanup |
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|
3574 // while it is safe to do so. |
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|
3575 |
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|
3576 int deleted_count = 0; // leave debugging breadcrumbs |
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diff
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|
3577 int live_count = 0; |
da91efe96a93
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diff
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|
3578 ClassLoaderData* loader_data = ik->class_loader_data() == NULL ? |
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|
3579 ClassLoaderData::the_null_class_loader_data() : |
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diff
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|
3580 ik->class_loader_data(); |
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diff
changeset
|
3581 |
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|
3582 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
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|
3583 RC_TRACE(0x00000200, ("purge: %s: previous version length=%d", |
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|
3584 ik->external_name(), ik->previous_versions()->length())); |
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|
3585 |
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|
3586 for (int i = ik->previous_versions()->length() - 1; i >= 0; i--) { |
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diff
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|
3587 // check the previous versions array |
da91efe96a93
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diff
changeset
|
3588 PreviousVersionNode * pv_node = ik->previous_versions()->at(i); |
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|
3589 ConstantPool* cp_ref = pv_node->prev_constant_pool(); |
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|
3590 assert(cp_ref != NULL, "cp ref was unexpectedly cleared"); |
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|
3591 |
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|
3592 ConstantPool* pvcp = cp_ref; |
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|
3593 if (!pvcp->on_stack()) { |
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|
3594 // If the constant pool isn't on stack, none of the methods |
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|
3595 // are executing. Delete all the methods, the constant pool and |
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diff
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|
3596 // and this previous version node. |
da91efe96a93
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|
3597 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
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|
3598 if (method_refs != NULL) { |
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|
3599 for (int j = method_refs->length() - 1; j >= 0; j--) { |
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|
3600 Method* method = method_refs->at(j); |
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|
3601 assert(method != NULL, "method ref was unexpectedly cleared"); |
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|
3602 method_refs->remove_at(j); |
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|
3603 // method will be freed with associated class. |
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|
3604 } |
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|
3605 } |
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|
3606 // Remove the constant pool |
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|
3607 delete pv_node; |
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|
3608 // Since we are traversing the array backwards, we don't have to |
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|
3609 // do anything special with the index. |
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changeset
|
3610 ik->previous_versions()->remove_at(i); |
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|
3611 deleted_count++; |
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|
3612 continue; |
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|
3613 } else { |
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|
3614 RC_TRACE(0x00000200, ("purge: previous version @%d is alive", i)); |
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|
3615 assert(pvcp->pool_holder() != NULL, "Constant pool with no holder"); |
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|
3616 guarantee (!loader_data->is_unloading(), "unloaded classes can't be on the stack"); |
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|
3617 live_count++; |
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|
3618 } |
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diff
changeset
|
3619 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3620 // At least one method is live in this previous version, clean out |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3621 // the others or mark them as obsolete. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3622 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3623 if (method_refs != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3624 RC_TRACE(0x00000200, ("purge: previous methods length=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3625 method_refs->length())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3626 for (int j = method_refs->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3627 Method* method = method_refs->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3628 assert(method != NULL, "method ref was unexpectedly cleared"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3629 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3630 // Remove the emcp method if it's not executing |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3631 // If it's been made obsolete by a redefinition of a non-emcp |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3632 // method, mark it as obsolete but leave it to clean up later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3633 if (!method->on_stack()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3634 method_refs->remove_at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3635 } else if (emcp_method_count == 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3636 method->set_is_obsolete(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3637 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3638 // RC_TRACE macro has an embedded ResourceMark |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3639 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3640 ("purge: %s(%s): prev method @%d in version @%d is alive", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3641 method->name()->as_C_string(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3642 method->signature()->as_C_string(), j, i)); |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3643 if (method->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3644 // Clean out any weak method links |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3645 method->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3646 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3647 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3648 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3649 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3650 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3651 assert(ik->previous_versions()->length() == live_count, "sanity check"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3652 RC_TRACE(0x00000200, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3653 ("purge: previous version stats: live=%d, deleted=%d", live_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3654 deleted_count)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3655 } |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3656 |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3657 Array<Method*>* methods = ik->methods(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3658 int num_methods = methods->length(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3659 for (int index2 = 0; index2 < num_methods; ++index2) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3660 if (methods->at(index2)->method_data() != NULL) { |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3661 methods->at(index2)->method_data()->clean_weak_method_links(); |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3662 } |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
3663 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3664 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3665 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3666 // External interface for use during class unloading. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3667 void InstanceKlass::purge_previous_versions(InstanceKlass* ik) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3668 // Call with >0 emcp methods since they are not currently being redefined. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3669 purge_previous_versions_internal(ik, 1); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3670 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3671 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3672 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3673 // Potentially add an information node that contains pointers to the |
0 | 3674 // interesting parts of the previous version of the_class. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3675 // This is also where we clean out any unused references. |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3676 // Note that while we delete nodes from the _previous_versions |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3677 // array, we never delete the array itself until the klass is |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3678 // unloaded. The has_been_redefined() query depends on that fact. |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
974
diff
changeset
|
3679 // |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3680 void InstanceKlass::add_previous_version(instanceKlassHandle ikh, |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3681 BitMap* emcp_methods, int emcp_method_count) { |
0 | 3682 assert(Thread::current()->is_VM_thread(), |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
52
diff
changeset
|
3683 "only VMThread can add previous versions"); |
0 | 3684 |
3685 if (_previous_versions == NULL) { | |
3686 // This is the first previous version so make some space. | |
3687 // Start with 2 elements under the assumption that the class | |
3688 // won't be redefined much. | |
6197 | 3689 _previous_versions = new (ResourceObj::C_HEAP, mtClass) |
0 | 3690 GrowableArray<PreviousVersionNode *>(2, true); |
3691 } | |
3692 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3693 ConstantPool* cp_ref = ikh->constants(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3694 |
0 | 3695 // RC_TRACE macro has an embedded ResourceMark |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3696 RC_TRACE(0x00000400, ("adding previous version ref for %s @%d, EMCP_cnt=%d " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3697 "on_stack=%d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3698 ikh->external_name(), _previous_versions->length(), emcp_method_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3699 cp_ref->on_stack())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3700 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3701 // If the constant pool for this previous version of the class |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3702 // is not marked as being on the stack, then none of the methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3703 // in this previous version of the class are on the stack so |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3704 // we don't need to create a new PreviousVersionNode. However, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3705 // we still need to examine older previous versions below. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3706 Array<Method*>* old_methods = ikh->methods(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3707 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3708 if (cp_ref->on_stack()) { |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3709 PreviousVersionNode * pv_node = NULL; |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3710 if (emcp_method_count == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3711 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3712 pv_node = new PreviousVersionNode(cp_ref, NULL); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3713 RC_TRACE(0x00000400, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3714 ("add: all methods are obsolete; flushing any EMCP refs")); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3715 } else { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3716 int local_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3717 GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass) |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3718 GrowableArray<Method*>(emcp_method_count, true); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3719 for (int i = 0; i < old_methods->length(); i++) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3720 if (emcp_methods->at(i)) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3721 // this old method is EMCP. Save it only if it's on the stack |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3722 Method* old_method = old_methods->at(i); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3723 if (old_method->on_stack()) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3724 method_refs->append(old_method); |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3725 } |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3726 if (++local_count >= emcp_method_count) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3727 // no more EMCP methods so bail out now |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3728 break; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3729 } |
0 | 3730 } |
3731 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3732 // non-shared ConstantPool gets a reference |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3733 pv_node = new PreviousVersionNode(cp_ref, method_refs); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3734 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3735 // append new previous version. |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3736 _previous_versions->append(pv_node); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3737 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3738 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3739 // Since the caller is the VMThread and we are at a safepoint, this |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3740 // is a good time to clear out unused references. |
0 | 3741 |
3742 RC_TRACE(0x00000400, ("add: previous version length=%d", | |
3743 _previous_versions->length())); | |
3744 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3745 // Purge previous versions not executing on the stack |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3746 purge_previous_versions_internal(this, emcp_method_count); |
0 | 3747 |
3748 int obsolete_method_count = old_methods->length() - emcp_method_count; | |
3749 | |
3750 if (emcp_method_count != 0 && obsolete_method_count != 0 && | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3751 _previous_versions->length() > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3752 // We have a mix of obsolete and EMCP methods so we have to |
0 | 3753 // clear out any matching EMCP method entries the hard way. |
3754 int local_count = 0; | |
3755 for (int i = 0; i < old_methods->length(); i++) { | |
3756 if (!emcp_methods->at(i)) { | |
3757 // only obsolete methods are interesting | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3758 Method* old_method = old_methods->at(i); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3759 Symbol* m_name = old_method->name(); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
3760 Symbol* m_signature = old_method->signature(); |
0 | 3761 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3762 // we might not have added the last entry |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3763 for (int j = _previous_versions->length() - 1; j >= 0; j--) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3764 // check the previous versions array for non executing obsolete methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3765 PreviousVersionNode * pv_node = _previous_versions->at(j); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3766 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3767 GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods(); |
0 | 3768 if (method_refs == NULL) { |
3769 // We have run into a PreviousVersion generation where | |
3770 // all methods were made obsolete during that generation's | |
3771 // RedefineClasses() operation. At the time of that | |
3772 // operation, all EMCP methods were flushed so we don't | |
3773 // have to go back any further. | |
3774 // | |
3775 // A NULL method_refs is different than an empty method_refs. | |
3776 // We cannot infer any optimizations about older generations | |
3777 // from an empty method_refs for the current generation. | |
3778 break; | |
3779 } | |
3780 | |
3781 for (int k = method_refs->length() - 1; k >= 0; k--) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3782 Method* method = method_refs->at(k); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3783 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3784 if (!method->is_obsolete() && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3785 method->name() == m_name && |
0 | 3786 method->signature() == m_signature) { |
3787 // The current RedefineClasses() call has made all EMCP | |
3788 // versions of this method obsolete so mark it as obsolete | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3789 // and remove the reference. |
0 | 3790 RC_TRACE(0x00000400, |
3791 ("add: %s(%s): flush obsolete method @%d in version @%d", | |
3792 m_name->as_C_string(), m_signature->as_C_string(), k, j)); | |
3793 | |
3794 method->set_is_obsolete(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3795 // Leave obsolete methods on the previous version list to |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3796 // clean up later. |
0 | 3797 break; |
3798 } | |
3799 } | |
3800 | |
3801 // The previous loop may not find a matching EMCP method, but | |
3802 // that doesn't mean that we can optimize and not go any | |
3803 // further back in the PreviousVersion generations. The EMCP | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3804 // method for this generation could have already been deleted, |
0 | 3805 // but there still may be an older EMCP method that has not |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3806 // been deleted. |
0 | 3807 } |
3808 | |
3809 if (++local_count >= obsolete_method_count) { | |
3810 // no more obsolete methods so bail out now | |
3811 break; | |
3812 } | |
3813 } | |
3814 } | |
3815 } | |
3816 } // end add_previous_version() | |
3817 | |
3818 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3819 // Determine if InstanceKlass has a previous version. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3820 bool InstanceKlass::has_previous_version() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3821 return (_previous_versions != NULL && _previous_versions->length() > 0); |
0 | 3822 } // end has_previous_version() |
3823 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3824 |
22933
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3825 InstanceKlass* InstanceKlass::get_klass_version(int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3826 if (constants()->version() == version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3827 return this; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3828 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3829 PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3830 for (PreviousVersionNode * pv_node = pvw.next_previous_version(); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3831 pv_node != NULL; pv_node = pvw.next_previous_version()) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3832 ConstantPool* prev_cp = pv_node->prev_constant_pool(); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3833 if (prev_cp->version() == version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3834 return prev_cp->pool_holder(); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3835 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3836 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3837 return NULL; // None found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3838 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3839 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3840 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3841 Method* InstanceKlass::method_with_idnum(int idnum) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3842 Method* m = NULL; |
0 | 3843 if (idnum < methods()->length()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3844 m = methods()->at(idnum); |
0 | 3845 } |
3846 if (m == NULL || m->method_idnum() != idnum) { | |
3847 for (int index = 0; index < methods()->length(); ++index) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3848 m = methods()->at(index); |
0 | 3849 if (m->method_idnum() == idnum) { |
3850 return m; | |
3851 } | |
3852 } | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3853 // None found, return null for the caller to handle. |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3854 return NULL; |
0 | 3855 } |
3856 return m; | |
3857 } | |
3858 | |
22933
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3859 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3860 Method* InstanceKlass::method_with_orig_idnum(int idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3861 if (idnum >= methods()->length()) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3862 return NULL; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3863 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3864 Method* m = methods()->at(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3865 if (m != NULL && m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3866 return m; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3867 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3868 // Obsolete method idnum does not match the original idnum |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3869 for (int index = 0; index < methods()->length(); ++index) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3870 m = methods()->at(index); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3871 if (m->orig_method_idnum() == idnum) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3872 return m; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3873 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3874 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3875 // None found, return null for the caller to handle. |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3876 return NULL; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3877 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3878 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3879 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3880 Method* InstanceKlass::method_with_orig_idnum(int idnum, int version) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3881 InstanceKlass* holder = get_klass_version(version); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3882 if (holder == NULL) { |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3883 return NULL; // The version of klass is gone, no method is found |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3884 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3885 Method* method = holder->method_with_orig_idnum(idnum); |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3886 return method; |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3887 } |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3888 |
1a9c5e6e13b7
8067662: "java.lang.NullPointerException: Method name is null" from StackTraceElement.<init>
sspitsyn
parents:
22886
diff
changeset
|
3889 |
11148
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3890 jint InstanceKlass::get_cached_class_file_len() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3891 return VM_RedefineClasses::get_cached_class_file_len(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3892 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3893 |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3894 unsigned char * InstanceKlass::get_cached_class_file_bytes() { |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3895 return VM_RedefineClasses::get_cached_class_file_bytes(_cached_class_file); |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3896 } |
825e6cb66923
8020309: Eliminate InstanceKlass::_cached_class_file_len.
jiangli
parents:
11096
diff
changeset
|
3897 |
0 | 3898 |
3899 // Construct a PreviousVersionNode entry for the array hung off | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3900 // the InstanceKlass. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3901 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool, |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3902 GrowableArray<Method*>* prev_EMCP_methods) { |
0 | 3903 |
3904 _prev_constant_pool = prev_constant_pool; | |
3905 _prev_EMCP_methods = prev_EMCP_methods; | |
3906 } | |
3907 | |
3908 | |
3909 // Destroy a PreviousVersionNode | |
3910 PreviousVersionNode::~PreviousVersionNode() { | |
3911 if (_prev_constant_pool != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3912 _prev_constant_pool = NULL; |
0 | 3913 } |
3914 | |
3915 if (_prev_EMCP_methods != NULL) { | |
3916 delete _prev_EMCP_methods; | |
3917 } | |
3918 } | |
3919 | |
3920 // Construct a helper for walking the previous versions array | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3921 PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) { |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3922 _thread = thread; |
0 | 3923 _previous_versions = ik->previous_versions(); |
3924 _current_index = 0; | |
3925 _current_p = NULL; | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3926 _current_constant_pool_handle = constantPoolHandle(thread, ik->constants()); |
0 | 3927 } |
3928 | |
3929 | |
3930 // Return the interesting information for the next previous version | |
3931 // of the klass. Returns NULL if there are no more previous versions. | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3932 PreviousVersionNode* PreviousVersionWalker::next_previous_version() { |
0 | 3933 if (_previous_versions == NULL) { |
3934 // no previous versions so nothing to return | |
3935 return NULL; | |
3936 } | |
3937 | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3938 _current_p = NULL; // reset to NULL |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3939 _current_constant_pool_handle = NULL; |
0 | 3940 |
3941 int length = _previous_versions->length(); | |
3942 | |
3943 while (_current_index < length) { | |
3944 PreviousVersionNode * pv_node = _previous_versions->at(_current_index++); | |
12281
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
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12067
diff
changeset
|
3945 |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
changeset
|
3946 // Save a handle to the constant pool for this previous version, |
4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
coleenp
parents:
12067
diff
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|
3947 // which keeps all the methods from being deallocated. |
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3948 _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool()); |
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3949 _current_p = pv_node; |
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3950 return pv_node; |
0 | 3951 } |
3952 | |
3953 return NULL; | |
3954 } // end next_previous_version() |